WO2010105402A1

WO2010105402A1 - Method, base station, user equipment and network system for information sending and receiving

Info

Publication number: WO2010105402A1
Application number: PCT/CN2009/070814
Authority: WO
Inventors: 黄飞; 高秀娟; 王燚; 印翀; 陈庆勇
Original assignee: 华为技术有限公司
Priority date: 2009-03-16
Filing date: 2009-03-16
Publication date: 2010-09-23
Also published as: CN102396289A; CN102396289B

Abstract

A method, a base station, a user equipment (UE) and a network system for information sending and receiving. The method involves the steps of: scrambling the cyclic redundancy check (CRC) information, which is in the physical broadcast channel (PBCH) and is used for checking the master information block (MIB) information, by applying a dedicated multicast CRC mask (100); and sending the PBCH information, which includes the MIB information and the scrambled CRC information (101). The present invention uses a mask which is different from the CRC mask in the PBCH of the prior art, and thereby prevents a UE which does not support a dedicated multimedia broadcast multicast service (MBMS) carrier service from successfully decoding the MIB information carried by a PBCH and from residing in the dedicated MBMS carrier network.

Description

Information transmission and information receiving method, base station, user equipment and network system

The embodiments of the present invention relate to the field of communications technologies, and in particular, to an information sending and receiving method, a base station, a user equipment, and a network system. Background technique

In order to effectively utilize mobile communication network resources, the Global Standards Organization of Mobile Communications has proposed Multimedia Broadcast Multicast Service (MBMS) service for mobile communication networks, which can realize a data source in a mobile communication network. Users send point-to-multipoint services of data, enable network resources to share, and improve the utilization of network resources. MBMS supports two modes of multimedia broadcast service and multicast service. It can broadcast multimedia video information directly to all users, and can also be sent to a group of paid subscription users. It can also help operators to carry out multimedia advertisements, free and charge. TV channels, MMS group and many other commercial applications.

The standardization of mobile communication global standardization defines two forms of network deployment: The first is a shared carrier, that is, a hybrid carrier, which is used to transmit multicast and unicast resources. The hybrid carrier and the unicast system share wireless under one carrier. In such a network, the user equipment (User Equipment hereinafter referred to as UE) can receive both unicast and multicast services; the second is to use the dedicated carrier to transmit MBMS services, where the UE can currently use unicast The mode or the hybrid mode accesses the network, and when the UE that does not support the dedicated carrier MBMS service accesses the MBMS dedicated carrier network, the UE may not successfully access the MBMS dedicated carrier network, and may not exit the access to the network. The process causes the UE to be in a "dead" state, thereby causing waste of the UE and system resources. Summary of the invention

Embodiments of the present invention provide an information sending and information receiving method, a base station, a user equipment, and a network The network system avoids UEs that do not support dedicated carrier MBMS services from camping on the MBMS dedicated carrier network. An embodiment of the present invention provides a method for sending information, including:

Applying a dedicated multicast cyclic redundancy check mask to perform scrambling processing on the cyclic redundancy check information used to check the main information block information in the physical broadcast channel information;

The physical broadcast channel information is transmitted, and the physical broadcast channel information includes the main information block information and the cyclic redundancy check information subjected to scrambling processing.

The embodiment of the invention provides a method for receiving information, including:

Receiving physical broadcast channel information sent by the base station, where the physical broadcast channel information includes primary information block information and cyclic redundancy check information for verifying the primary information block information;

Applying a dedicated multicast cyclic redundancy check mask, the cyclic redundancy check information is descrambled to obtain the main information block information.

An embodiment of the present invention provides a base station, including:

a first processing module, configured to apply a dedicated multicast cyclic redundancy check mask, and perform scrambling processing on the cyclic redundancy check information used to check the main information block information in the physical broadcast channel information;

And a sending module, configured to send, to the user equipment, primary information block information in the physical broadcast channel information processed by the first processing module and cyclic redundancy check information subjected to scrambling processing.

An embodiment of the present invention provides a user equipment, including:

a receiving module, configured to receive physical broadcast channel information sent by the base station, where the physical broadcast channel information includes primary information block information and cyclic redundancy check information used to verify the primary information block information;

The third processing module applies a dedicated multicast cyclic redundancy check mask, and performs descrambling processing on the cyclic redundancy check information to obtain the main information block information.

The embodiment of the invention provides a network system, including:

a base station, configured to apply a dedicated multicast cyclic redundancy check mask, perform scrambling processing on the cyclic redundancy check information used to check the main information block information in the physical broadcast channel information, and send the Physical broadcast channel information, the physical broadcast channel information including the main information block information and the cyclic redundancy check information subjected to scrambling processing; a user equipment, configured to receive physical broadcast channel information sent by the base station, where the physical broadcast channel information includes primary information block information and cyclic redundancy check information used to verify the primary information block information, and apply the dedicated multicast loop The redundancy check mask performs descrambling processing on the cyclic redundancy check information to obtain the main information block information. The information transmission and information receiving method, the base station, the user equipment, and the network system provided by the embodiments of the present invention apply a dedicated multicast cyclic redundancy check mask to verify the information of the main information block in the physical broadcast channel information. The cyclic redundancy check information is subjected to scrambling processing, and then the physical broadcast channel information including the main information block information and the scrambled cyclic redundancy check signal is transmitted, so that the UE that does not support the dedicated carrier MBMS service cannot obtain the physical basis correctly. The primary information block information carried by the physical broadcast channel (hereinafter referred to as PBCH) effectively avoids the UE that does not support the dedicated carrier MBMS service from camping on the MBMS dedicated carrier network. DRAWINGS

1 is a schematic flowchart of an exit process in a process in which a UE performs network camping according to an embodiment of the present invention; FIG. 2 is a flowchart of a method for sending information according to an embodiment of the present invention;

3 is a flowchart of an information receiving method according to an embodiment of the present invention;

4 is a schematic structural diagram of a base station according to an embodiment of the present invention;

5 is a schematic structural diagram of a base station according to Embodiment 2 of the present invention;

6 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a network system according to an embodiment of the present invention. detailed description

The technical solutions of the embodiments of the present invention are further described below with reference to the accompanying drawings and specific embodiments. When the UE accesses the MBMS dedicated carrier network, if the UE does not support the dedicated carrier MBMS service, the UE needs to exit the MBMS dedicated carrier network. FIG. 1 is a schematic diagram of the exit process in the process of the UE camping in the embodiment of the present invention, such as As shown in Figure 1, the UE first needs to synchronize access with the network. If the synchronous access is successful, it passes through the primary synchronization channel (Primary Synchronisation Channel; The following is abbreviated: PSC) / Secondary Synchronisation Channel (SSC) obtains the identity of the cell, and obtains a reference signal by using the cell identifier. The reference signal is a PN sequence, and the initial value of the PN sequence is obtained according to the identity of the cell, The current cell is identified as a working cell of the LTE; if the synchronous access fails, the current cell is exited, and the synchronous access process of other cells is re-initiated, which is the first exit point.

After the cell identifier and the reference signal are obtained, the UE demodulates the PBCH and obtains the information of the master information block (MIB). If the MIB information cannot be obtained correctly at this time, the UE exits the access process and re-synchronizes the connection. In, this is the second exit point.

After successfully obtaining the MIB information, the UE needs to obtain the information of the system information block (SIB). After the SIB1/SIB2 information is successfully obtained, the subsequent process of the cell resident can be continued to implement the successful access of the network. If the SIB1/SIB2 information is not obtained, the access process is exited, which is the third exit point.

According to the three exit points of the foregoing process, the UEs that are incompatible with the current network may use the above three exit mechanisms to prevent UEs of different systems from camping on the incompatible network during network access. The embodiments of the present invention provide a solution for the UE to exit at the second exit point in the network access procedure, and to avoid the user equipment that does not support the dedicated carrier MBMS service from camping on the MBMS dedicated carrier network.

FIG. 2 is a flowchart of a method for sending information according to an embodiment of the present invention. As shown in FIG. 2, the method includes: Step 100: Apply a dedicated multicast cyclic redundancy check mask to the physical broadcast channel information for verification. The cyclic redundancy check information of the main information block information is subjected to scrambling processing;

If the mobile terminal is to successfully access the wireless network, it must be able to successfully obtain the ΜΙΒ information sent by the wireless network. That is, if the wireless network allows the mobile terminal to access the network, the 下下Information should be available to the mobile terminal. If the mobile terminal is unable to correctly obtain the ΜΙΒ information, the mobile terminal will exit the network access procedure according to the provisions of the existing RAN protocol. In order to prevent the UE that does not support the dedicated carrier MBMS service from accessing the MBMS dedicated carrier network, the UE that does not support the dedicated carrier MBMS service may not be able to obtain positive True MIB information. In the embodiment of the present invention, the base station performs scrambling on the cyclic redundancy check information (hereinafter referred to as CRC) of the PBCH by using a dedicated multicast cyclic redundancy check mask, so that the UE that does not support the dedicated carrier MBMS service is used. The MIB information carried by the PBCH cannot be correctly solved, so that the UE cannot obtain the MIB information, thereby exiting the MBMS dedicated carrier network, and the UE is prevented from camping on the network.

Specifically, the information sent by the PBCH is the physical broadcast channel information. As shown in Table 1, the physical broadcast channel information specifically includes MIB information and CRC information, where the MIB information is 24-bit information bits, and the CRC information is 16-bit cyclic redundancy bits. The 16-bit CRC information is obtained based on the 24-bit MIB information and is used to verify the MIB information. In order to carry the antenna information to the UE, the network side may apply a mask to perform scrambling processing on the CRC information, and the mask corresponds to the antenna information. As shown in Table 2, three different masks respectively represent three antenna configurations. The corresponding mask is selected according to the number of actual transmit antennas, and then the CRC information is XORed by applying a mask, so that the CRC carries the antenna information. The UE uses the blind detection method to decode according to the transmission mode of one antenna, two antennas and four antennas, and uses the mask corresponding to the corresponding number of antennas to XOR the CRC, and then judge whether the MIB information is correct or not. This is known as the number of transmitting antennas. Certainly, the UE has previously stored the correspondence between the mask and the antenna configuration. The UE that does not support the dedicated carrier MBMS service also stores the mask information in the unicast/mixed mode as shown in Table 2, when the dedicated carrier MBMS service is not supported. When the UE accesses the MBMS dedicated carrier network, the correct MIB information can also be obtained, so that the UE cannot be prevented from camping on the MBMS dedicated carrier network. In the embodiment of the present invention, a dedicated multicast cyclic redundancy check mask in a multicast mode applicable to a dedicated carrier is added to the existing unicast/mixed mode mask, that is, the dedicated multicast cyclic redundancy is applied. The check mask scrambles the CRC information, and then sends the scrambled CRC information along with the MIB information through the PBCH. Moreover, the dedicated multicast cyclic redundancy check mask is to notify the UE supporting the dedicated carrier MBMS service in advance, so that the UE supporting the dedicated carrier MBMS service can correctly decode the CRC. For a UE that does not support the dedicated carrier MBMS service, the dedicated multicast cyclic redundancy check mask cannot be obtained, so the CRC cannot be decoded correctly. The MIB information is not obtained correctly, so it is prompted to exit the network access process.

The dedicated multicast cyclic redundancy check mask involved in this embodiment is different from three different CRC masks corresponding to the three antenna configurations specified by the existing protocol (0, 0, 0, 0, 0, 0,0,0,0,0,0,0,0,0,0,0 ) , ( 1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1 ) and (0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1 ), such as dedicated multicast cyclic redundancy The check mask can be used (1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0) to ensure system performance in this embodiment. Use (1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0) as the dedicated multicast cyclic redundancy check mask, Table 3 is dedicated The Hamming distance between the multicast cyclic redundancy check mask and the existing mask can be seen from Table 3. The newly added dedicated multicast CRC mask does not change the minimum Hamming distance, so it does not decrease. System performance.

Table 1

MIB ( 24bits ) CRC ( 16bits)

Table 2

<1, 1,1, 1,1, 1,1, 1,1, 1,1, 1,1,1,1,1> 8

<0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1> 16

Step 101: Send physical broadcast channel information, where the physical broadcast channel information includes primary information block information and cyclic redundancy check information subjected to scrambling processing.

After the base station applies a dedicated multicast cyclic redundancy check mask to perform bitwise exclusive OR scrambling on the CRC information, the scrambled CRC information and MIB information are transmitted to the UE through the PBCH. Since a dedicated PBCH dedicated multicast CRC mask is used in the MBMS dedicated carrier network, the UE that does not support the dedicated carrier MBMS service uses the original three CRC masks to blindly check the PBCH, and thus does not support the dedicated carrier MBMS. The UE of the service cannot correctly detect the MIB information, and the UE can exit the MBMS dedicated carrier network according to regulations. In order to avoid that the UE-resident MBMS dedicated carrier network that does not support the dedicated carrier MBMS erroneously receives the MIB information, the base station may further further according to the SIB structure corresponding to the multicast mode that is reserved by the network side and the UE supporting the dedicated carrier MBMS service. Updating the system information block information sent in the data channel, and transmitting the updated SIB information, that is, the base station needs to change the structure of the SIB and send the data to the UE through the data channel, because the UE successfully obtains the MIB information, To further obtain the SIB information for the purpose of accessing the network, the base station may scramble the CRC information in the application-specific multicast cyclic redundancy check mask in order to avoid the UE camping network that does not support the dedicated carrier MBMS service. On the basis of the configuration, the structure of the SIB information is changed, for example, only the SIB1 is transmitted without transmitting the SIB2, and the structure information is pre-defined by the UE on the network side and the UE supporting the dedicated carrier MBMS service, and is not the same as the unicast/mixing. Such a UE can correctly obtain the SIB information to complete the network access process; UE MBMS service carrier, due to the different structure of the SIB information, so that does not support the MBMS dedicated carriers UE can not obtain the SIB information, so exit the network access procedure. Through the above method, the dual exit mechanism is applied to avoid the purpose of avoiding UEs that do not support the dedicated carrier MBMS service from accessing the dedicated multicast network.

The information sending method provided by the embodiment of the present invention applies a dedicated multicast cyclic redundancy check mask to a cyclic redundancy check signal for verifying the main information block information in the physical broadcast channel information. The information is subjected to scrambling processing, and then the physical broadcast channel information including the main information block information and the scrambled cyclic redundancy check signal is transmitted, so that the UE that does not support the dedicated carrier MBMS service cannot correctly obtain the main information block carried by the PBCH. Information, effectively avoiding UEs that do not support dedicated carrier MBMS services from camping on the MBMS dedicated carrier network.

FIG. 3 is a flowchart of a method for receiving information according to an embodiment of the present invention. As shown in FIG. 3, the method includes: Step 200: Receive physical broadcast channel information sent by a base station, where the physical broadcast channel information includes primary information block information and is used for verification. Cyclic redundancy check information of the main information block information;

In order to enable the UE supporting the dedicated carrier MBMS service to access the MBMS dedicated carrier network, the base station sends PBCH information, where the PBCH information carries the MIB information and the CRC information. And in order to avoid UEs that do not support dedicated carrier MBMS services,

In the MBMS dedicated carrier network, the base station applies a dedicated multicast cyclic redundancy check mask to scramble the CRC, such as XOR processing. The user equipment receives PBCH information sent by the base station through the physical broadcast channel.

Step 201: Apply a dedicated multicast cyclic redundancy check mask, and perform descrambling processing on the cyclic redundancy check information to obtain the main information block information.

When the UE supporting the dedicated carrier MBMS service performs the access procedure of the MBMS dedicated carrier network, the application of the dedicated multicast cyclic redundancy check mask can correctly obtain the MIB information and perform the subsequent process in the network access procedure.

In order to prevent the UE that does not support the dedicated carrier MBMS service from erroneously receiving the MIB information, the base station may further update the data channel according to the SIB structure corresponding to the multicast mode reserved by the UE on the network side and the UE supporting the dedicated carrier MBMS service. The system information block information sent in, and the updated SIB information is sent. For the UE supporting the dedicated carrier MBMS service, the SIB structure of the multicast mode is obtained in advance, so that the SIB information sent by the base station through the data channel can be received according to the system information block structure corresponding to the multicast mode that is reserved by the network side and the user equipment; For a UE that does not support the dedicated carrier MBMS service, even if the UE incorrectly receives the MIB information, since the UE cannot obtain the SIB information, it also has to retreat. Out of the network access process.

The following describes the process of the UE acquiring the MIB in the embodiment of the present invention. The process specifically includes the following steps:

The UE first searches for the synchronization channel PSC/SSC, and synchronizes to the MBMS dedicated carrier network; obtains the identity and reference signal of the cell through the synchronization channel;

Demodulating the PBCH according to the reference signal;

The MIB information is generated as follows: The 24-bit MIB information is

α. ^{^{^{, Α ι, α 2, α}}} "···, α 0 to obtain 16 (i.e., information ^ 1 ^ 2, ^", ¾, CRC bits as shown in Table ^χ four transmission antennas according to a mask. "', , ^χ ,···, ^{χ 5} is scrambled, and the final bit sequence 歹ij Cc CpC , c ₃ ,..., c _{39 is} generated as follows

, for k = 0, 1, 2, ··., A-l;

=(3⁄4 + — J ^mod2 , for k = for k = A, A+l, A+2,..., A+15

(A=24).

Table 4 Antenna Number of Base Station Parameters PBCH CRC Mask < ,0, ^Λ ,..., , 15 >

1 <0, 0, 0, 0, 0, 0, 0, 0, 0, ο, 0, o, 0, 0, o, 0>

2 <1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1>

3 <0, 1,0, 1,0, 1,0, 1, 0, 1, o, 1, o, 1, o, 1> multicast <1,0, 1,0, 1,0, 1 , 0, 1, ο, 1, o, 1, o, 1, 0> Therefore, in order for the UE to obtain MIB information, it is necessary to apply a CRC mask to resolve or process the masked XOR processed CRC. The UE that does not support the dedicated carrier MBMS service verifies the correctness of the MIB information according to the number of antenna ports 1, 2 and 4 in Table 4, because the MBMS dedicated carrier network uses a dedicated multicast CRC mask at this time, and thus does not support the dedicated carrier MBMS. The UE of the service will have a verification error, so that the MIB information cannot be received correctly, and then the network access procedure is exited. For a UE that can access the MBMS dedicated carrier network, the multicast PBCH will be used. The dedicated multicast CRC mask verifies the correctness of the MIB information, thereby obtaining MIB information, and then proceeds to perform subsequent operations residing on the MBMS dedicated carrier network.

In the information receiving method provided by the embodiment of the present invention, the UE supporting the dedicated carrier MBMS service may correctly receive the MIB and the SIB information to successfully access the MBMS dedicated carrier network according to the pre-negotiated configuration information with the network side; and support the dedicated carrier MBMS. The UE of the service can exit the access procedure of the MBMS dedicated carrier network in time because it cannot correctly receive the MIB and SIB information.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

4 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 4, the base station includes a first processing module 11 and a sending module 12, where the first processing module 11 is configured to apply a dedicated multicast cyclic redundancy check mask. And performing a scrambling process on the cyclic redundancy check information used for verifying the main information block information in the physical broadcast channel information; the sending module 12 is configured to send, to the user equipment, the physical broadcast channel information processed by the first processing module 11 Main information block information and cyclic redundancy check information subjected to scrambling processing.

Specifically, the first processing module 11 applies a dedicated multicast cyclic redundancy check mask to scramble the CRC of the PBCH, since the dedicated multicast cyclic redundancy check mask corresponds to an existing protocol and an antenna, The masks of the two antennas and the four antennas are different in the transmission mode. Therefore, the UE that does not support the dedicated carrier MBMS service cannot obtain the MIB information correctly, and thus exits the network access procedure. For example, the dedicated multicast cyclic redundancy check mask is selected to not change the minimum Hamming distance from the existing mask (1,0,1,0,1,0,1,0,1,0,1,0 , 1,0,1,0 ) , does not degrade system performance. After the processing by the first processing module 11 is completed, the transmitting module 12 transmits the MIB information and the scrambled CRC information to the UE through the PBCH. The base station provided by the embodiment of the present invention uses a mask different from the CRC mask in the existing PBCH, so that the UE that does not support the dedicated carrier MBMS service cannot correctly decode the MIB information carried by the PBCH, and effectively avoids not supporting the dedicated carrier MBMS. The UE of the service resides in the MBMS dedicated carrier network, and since the different CRC masks are used, the bits of the same PBCH can represent the proprietary content of the MBMS dedicated carrier network.

FIG. 5 is a schematic structural diagram of a base station according to Embodiment 2 of the present invention. As shown in FIG. 5, the base station includes a first processing module 1 1 and a sending module 12, in order to avoid UEs that do not support dedicated carrier MBMS services in detecting PBCH The unpredictable reason erroneously receives the MIB information, and ensures that the UE that does not support the dedicated carrier MBMS service is to quit the network in the subsequent access procedure. Therefore, the base station further includes the second processing module 13 for scheduling the network and the UE according to the Corresponding to the system information block structure of the multicast mode, the system information block information transmitted in the data channel is updated. The base station changes the structure of the SIB information by using the application-specific multicast cyclic redundancy check mask to scramble the CRC information by the second processing module 13, and the structure information is the UE on the network side and the dedicated carrier MBMS service. Pre-defined, it will not be the same as unicast/mixing, so such UE can correctly obtain SIB information to complete the network access procedure; and corresponding to UEs that do not support dedicated carrier MBMS service, due to the different structure of SIB information, If the UE that does not support the dedicated carrier MBMS service cannot obtain the SIB information, the SIB information cannot be obtained, so the network access procedure is to be exited. The SIB information that has been structurally updated is also transmitted via the data channel via the transmitting module 12.

Additionally, the base station further includes a first storage module 14 for storing the dedicated multicast cyclic redundancy check mask and system information block structure information for the multicast mode. The first processing module 1 1 and the second processing module 13 obtain corresponding information from the first storage module 14 to process different information, so as to achieve the purpose of causing the UE that does not support the dedicated carrier MBMS service to exit the network access procedure.

The base station provided by the embodiment of the present invention applies a dedicated multicast cyclic redundancy check mask, and performs scrambling processing on the cyclic redundancy check information used to check the main information block information in the physical broadcast channel information, and then sends the information. The physical broadcast channel information including the main information block information and the scrambled cyclic redundancy check signal enables the UE that does not support the dedicated carrier MBMS service to be correctly obtained by the PBCH. The primary information block information effectively avoids UEs that do not support dedicated carrier MBMS services from camping on the MBMS dedicated carrier network.

FIG. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 6, the user equipment includes a receiving module 21 and a third processing module 22, where the receiving module 21 is configured to receive physical broadcast channel information sent by a base station, where the physical broadcast is performed. The channel information includes main information block information and cyclic redundancy check information for verifying the main information block information; the third processing module 22 applies a dedicated multicast cyclic redundancy check mask to the cyclic redundancy check information. Perform descrambling processing to obtain the main information block information.

Specifically, the base station sends the PBCH information to the UE, and the PBCH information carries the MIB information and the CRC information, in order to enable the UE that supports the dedicated carrier MBMS service to access the MBMS dedicated carrier network. Moreover, in order to prevent the UE that does not support the dedicated carrier MBMS service from camping on the MBMS dedicated carrier network, the base station applies a dedicated multicast cyclic redundancy check mask to scramble the CRC, for example, XOR processing the CRC. The receiving module 21 in the UE supporting the dedicated carrier MBMS service receives the PBCH information sent by the base station through the physical broadcast channel; and then applies the dedicated multicast cyclic redundancy check mask by the third processing module 22 to perform descrambling processing on the CRC information. , obtain MIB information, and carry out the subsequent process of the network access process. For a UE that does not support the dedicated carrier MBMS service, since it cannot obtain the MIB information correctly, it must exit the network access procedure.

In order to prevent the UE that does not support the dedicated carrier MBMS service from erroneously receiving the MIB information, the base station may further update the data channel according to the SIB structure corresponding to the multicast mode reserved by the UE on the network side and the UE supporting the dedicated carrier MBMS service. The system information block information sent in, and the updated SIB information is sent. The UE supporting the dedicated carrier MBMS service can receive the system that the base station transmits through the data channel according to the system information block structure corresponding to the multicast mode that is reserved by the user equipment, because the UE supporting the dedicated carrier MBMS service knows the SIB structure of the multicast mode in advance. Information block information; For a UE that does not support the dedicated carrier MBMS service, even if the UE erroneously receives the MIB information, since the UE cannot obtain the SIB information, it also has to exit the network access procedure. The UE provided in this embodiment further includes a second storage module 23 for storing the system information block structure information of the dedicated multicast cyclic redundancy check mask and the multicast mode, and the receiving module 21 and the third processing module 22 The second storage module 23 obtains corresponding information to process different information to access the MBMS dedicated carrier network.

The user equipment provided by the embodiment of the present invention may correctly receive the MIB and the SIB information to successfully access the MBMS dedicated carrier network according to the pre-negotiated configuration information with the network side, and may not correctly receive the MIB for the UE that does not support the dedicated carrier MBMS service. And the SIB information can therefore exit the access procedure of the MBMS dedicated carrier network in time.

FIG. 7 is a schematic diagram of a network system according to an embodiment of the present invention. As shown in FIG. 7, the network system includes a base station 1 and a user equipment 2, where the base station 1 is configured to apply a dedicated multicast cyclic redundancy check mask to a physical broadcast channel. The cyclic redundancy check information for verifying the main information block information in the information is subjected to scrambling processing, and the physical broadcast channel information is transmitted to the user equipment 2, the physical broadcast channel information including the main information block information and the added Cyclic redundancy check information of the scrambling process; the user equipment 2 is configured to receive physical broadcast channel information sent by the base station 1, the physical broadcast channel information including main information block information and a cyclic redundancy check for verifying the main information block information The information is verified, and the dedicated multicast cyclic redundancy check mask is applied, and the cyclic redundancy check information is descrambled to obtain the main information block information.

The base station and the user equipment involved in the network system provided in this embodiment may use the base station and the user equipment provided in the foregoing embodiments, and the structures and functions thereof are not described herein again.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Claim

A method for transmitting information, comprising:

And transmitting the physical broadcast channel information, where the physical broadcast channel information includes the main information block information and the cyclic redundancy check information subjected to scrambling processing.

The method for transmitting information according to claim 1, wherein the method further comprises: updating system information in the data channel according to a system information block structure corresponding to the multicast mode predetermined by the network side and the user equipment. After the block information, the updated system information block information is sent to the user equipment.

The information transmitting method according to claim 1 or 2, wherein the dedicated multicast cyclic redundancy check mask comprises (1, 0, 1, 0, 1, 0, 1, 0, 1 , 0,1,0,1,0,1,0 ).

The information transmitting method according to claim 3, wherein the application-specific multicast cyclic redundancy check mask is used for verifying the information of the main information block in the physical broadcast channel information. The remaining check information is scrambled and includes:

And applying the dedicated multicast cyclic redundancy check mask to perform XOR processing on the cyclic redundancy check information generated according to the main information block information.

5. A method for receiving information, comprising:

Receiving physical broadcast channel information sent by the base station, where the physical broadcast channel information includes main information block information and cyclic redundancy check information for verifying the main information block information;

Applying a dedicated multicast cyclic redundancy check mask, performing descrambling processing on the cyclic redundancy check information to obtain the main information block information.

The information receiving method according to claim 5, wherein the method further comprises: receiving, by the network side, a system information block structure corresponding to the multicast mode that is predetermined by the network device, receiving the base station through the data channel. System information block information sent.

The information receiving method according to claim 5 or 6, wherein the application is specific to Using the multicast cyclic redundancy check mask, performing descrambling processing on the cyclic redundancy check information includes: applying a dedicated multicast cyclic redundancy check mask, and generating the information according to the master information block information The cyclic redundancy check information is resolved or processed bit by bit.

8. A base station, comprising:

And a sending module, configured to send the physical broadcast channel information, where the physical broadcast channel information includes the primary information block information and the cyclic redundancy check information subjected to scrambling processing.

The base station according to claim 8, further comprising:

And a second processing module, configured to update system information block information sent in the data channel according to a system information block structure corresponding to the multicast mode that is reserved by the network side and the user equipment.

The base station according to claim 9, wherein the sending module is further configured to send the updated system information block information through the data channel.

The base station according to claim 10, further comprising:

And a first storage module, configured to store the system information block structure information of the dedicated multicast cyclic redundancy check mask and the multicast mode.

12. A user equipment, comprising:

a receiving module, configured to receive physical broadcast channel information sent by the base station, where the physical broadcast channel information includes primary information block information and cyclic redundancy check information used to verify the primary information block information; Dedicating a multicast cyclic redundancy check mask, performing descrambling processing on the cyclic redundancy check information to obtain the main information block information.

The user equipment according to claim 12, wherein the receiving module is further configured to:

The system information block information transmitted by the base station through the data channel is received according to a system information block structure that is predetermined by the user equipment and corresponds to the multicast mode.

The user equipment according to claim 12 or 13, further comprising: And a second storage module, configured to store the system information block structure information of the dedicated multicast cyclic redundancy check mask and the multicast mode.

15. A network system, comprising:

a base station, configured to apply a dedicated multicast cyclic redundancy check mask, perform scrambling processing on the cyclic redundancy check information used to check the main information block information in the physical broadcast channel information, and send the information to the user equipment Physical broadcast channel information, the physical broadcast channel information including the main information block information and the cyclic redundancy check information subjected to scrambling processing;

a user equipment, configured to receive physical broadcast channel information sent by the base station, where the physical broadcast channel information includes primary information block information and cyclic redundancy check information used to verify the primary information block information, and apply the Dedicating a multicast cyclic redundancy check mask, performing descrambling processing on the cyclic redundancy check information to obtain the main information block information.