CN100403669C - Method for providing real time broadcasting service in mobile communication network - Google Patents
Method for providing real time broadcasting service in mobile communication network Download PDFInfo
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- CN100403669C CN100403669C CNB021006083A CN02100608A CN100403669C CN 100403669 C CN100403669 C CN 100403669C CN B021006083 A CNB021006083 A CN B021006083A CN 02100608 A CN02100608 A CN 02100608A CN 100403669 C CN100403669 C CN 100403669C
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Abstract
The present invention relates to a method for providing real-time broadcast services in a mobile communication network, which is achieved by setting special down scrambling codes. A wireless access net comprises original service layers and broadcast service layers, and the original service layers and the broadcast service layers completely coincide on a subzone structure of a macro-subzone layer. Each subzone with an original service layer and a broadcast service layer has two scrambling codes namely a subzone down scrambling code of original services and a newly increased down special scrambling code. One down special scrambling code which is special for real-time broadcast services is increased in base station transmitters of each subzone of marco-subzone covering layers of original services, the same down special scrambling code and the same special broadcasting channel code are used by all the subzones, and real-time broadcast information is transmitted only. A mobile terminal is provided with a channel code and a source code of two services, and the operating modes of original services are kept unchanged. Work is carried out according to the switchable two working modes of the original service layer and the broadcast service layer, pilot channels of the original subzones are shared, and the real-time broadcast services are simultaneously supported in idle and connecting modes.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly realize the method for broadcasting in real time in third generation code division multiple access (CDMA) mobile communication system, is by special-purpose scrambler being set, the method for real time broadcasting service being provided in mobile communications network.
Background technology
In existing second generation mobile communication system, be subjected to bandwidth constraints, the business that provides is more single, as can only being main business with the transporting speech signal.In two generation half mobile communication system, though developed data service, be subjected to the restriction of transmission rate, also can only be confined to use in the information inquiry class business.In the 3-G (Generation Three mobile communication system) in future, multimedia service can be provided, therefore in 3-G (Generation Three mobile communication system), also might introduce multi-media broadcasting service and multicast service.
Broadcasting service is provided on portable terminal at present, mainly contains dual mode:
(1) integrated wireless broadcast receiver or television receiver on portable terminal, the broadcasting service of utilizing existing radio broadcasting net or Television Broadcasting Network to provide is listened to or rating.Its advantage is to have utilized existing Internet resources, do not need the mobile network is carried out any modification, but its shortcoming is also very obvious, owing to need integrated receiver circuit or TV receiver circuit on the portable terminal, can increase mobile terminal cost greatly, particularly when integrated television receiver, the problem that integrated difficulty is big, reception can't guarantee is arranged.
(2) utilize the mobile network that video request program or Audio on Demand are provided.Such as, in the technical specification of present 3-G (Generation Three mobile communication system), because enough broadcast channel capacity are not set, therefore existing broadcast channel can only low, the less demanding data of real-time of transmission rate, for data rate height, the demanding TV programme of real-time or broadcast program, can only provide by the mode of user's program request.Its shortcoming is, for some real-time broadcast programs, and as live TV news, sports cast, because of each user's program request all will take a channel, just can not shared network resource, cause the waste of resource.And be subjected to the restriction of resource, can not satisfy the demand that a large number of users is watched simultaneously.
Summary of the invention
The objective of the invention is to design a kind of method that real time broadcasting service is provided in mobile communications network,, provide real time broadcasting service in prior mobile network by the dedicated broadcast resource-special-purpose scrambler with wide coverage property is set.
The technical scheme that realizes the object of the invention is such: a kind of method that real time broadcasting service is provided in mobile communications network is characterized in that:
In the wireless access network of the mobile radio communication that contains former operation layer, set up to be exclusively used in the broadcasting service of real time broadcasting service layer is provided, establish independently downlink dedicated scrambler at this broadcasting service layer, broadcasting service layer sub-district overlaps with former operation layer subdistrict position, form former operation layer and add broadcasting service layer cell structure, this identical downlink dedicated scrambler is used in each sub-district, dedicated broadcast channel sign indicating number with identical only transmits real-time broadcast message;
Only the macrocell at non-Microcell or non-picocell increases described real time broadcasting service downlink dedicated scrambler, this increase is the scrambling operation that increases described downlink dedicated scrambler in the base station sender of tectal each sub-district of former professional macrocell, and described base station sender comprises the modulation of original business and the modulation and the spread spectrum of spread spectrum and real time broadcasting service;
Portable terminal is by switchable former operation layer and two kinds of mode of operation work of broadcasting service layer, and portable terminal remains unchanged to the working method of original business, shares the pilot channel of original sub-district, supports real time broadcasting service simultaneously under idle and connection mode.
The information of described broadcasting service layer and the information of original operation layer, in the base station sender of tectal each sub-district of former professional macrocell, a public power amplifier or use separately power amplifier respectively.
The modulation of described original business and spread spectrum comprise source encoding to original business, chnnel coding, quaternary PSK, spread spectrum and with each cell downlink scrambler the spread spectrum result are carried out scrambling; The modulation of described real time broadcasting service and spread spectrum comprise source encoding to real time broadcasting service, chnnel coding, quaternary PSK, spread spectrum and with described downlink dedicated scrambler the spread spectrum result are carried out scrambling.
The modulation of described original business and spread spectrum comprise source encoding to original business, chnnel coding, quaternary PSK, spread spectrum and with each cell downlink scrambler the spread spectrum result are carried out scrambling; The modulation of described real time broadcasting service and spread spectrum comprise source encoding to real time broadcasting service, chnnel coding, quaternary PSK, spread spectrum and with described downlink dedicated scrambler the spread spectrum result are carried out scrambling.
Described portable terminal, in the demodulating unit of RAKE receiver, also adopt and be exclusively used in the downlink dedicated scrambler that receives real time broadcasting service, with the channel decoding and the source decoding of carrying out original business and real time broadcasting service after RAKE receiver along separate routes, the channel code of RAKE receiver is described dedicated broadcast channel sign indicating number.
Described former operation layer adds broadcasting service layer cell structure, is that scope, the position that former operation layer adds broadcasting service layer sub-district and former operation layer macrocell divided consistent.
Described portable terminal is supported real time broadcasting service simultaneously under idle and connection mode, further comprise:
Switch to the portable terminal of broadcast mode from idle pulley, its original business still is in idle pulley;
When portable terminal is in the macrocell, be according to this sub-district and the result that the public guide frequency of the stronger one or more macrocells of adjacent signal carried out channel estimating, the signal of a plurality of sub-districts of receiving is merged, demodulate the signal on the dedicated broadcast channel, portable terminal carries out cell selecting according to former operation flow and gravity treatment, position are upgraded, paging receiving information;
When portable terminal is in Microcell or the picocell, be the result who carries out channel estimating according to the public guide frequency of the stronger one or more macrocells of adjacent signal, the signal of a plurality of sub-districts of receiving is merged, demodulate the signal on the dedicated broadcast channel, portable terminal carries out cell selecting according to former operation flow and gravity treatment, position are upgraded, paging receiving information.
Described portable terminal also utilizes the dedicated broadcast channel data that demodulate and known Channel Transmission condition, scrambler and channel code information, estimates the interference to Traffic Channel of the downlink dedicated scrambler that increased, and deduct this interference value from received signal.
Method of the present invention be in existing mobile communications system by special-purpose scrambler is set, support business real-time, that data rate is high, as real-time broadcasting service; When using special-purpose scrambler, same scrambler and channel code are used in each sub-district of broadcasting service layer; When using special-purpose scrambler, pbs layer+operation layer is divided consistent with original operation layer macrocell scope, position; When using special-purpose scrambler, portable terminal can be by the channel estimating information of using known broadcasting service scrambler, channel code information, this sub-district and neighbor cell, the broadcast service information that demodulates etc., carry out Interference Cancellation, to improve the receiving ability of terminal to other Traffic Channels; When using special-purpose scrambler, provide the operator of real time broadcasting service can activate or close broadcasting service as required and transmit.
The present invention has compared following advantage with present technology:
1. portable terminal utilizes existing functional module to finish reception to TV programme, radio program, need not to be provided with in addition receiving circuit, has improved the integrated level of portable terminal, has reduced product cost;
2. utilize mobile network existing, wide covering to support real time broadcasting service, can guarantee the effect of the reception broadcast program of terminal;
3. compare with play-on-demand program, user's independent access broadcast program mode,, improved utilization ratio of wireless resources and power system capacity because the resource of same support real time broadcasting service provides service to a plurality of mobile subscribers simultaneously.
Description of drawings
Fig. 1 is the schematic network structure that real time broadcasting service is provided in mobile communication system;
Fig. 2 is that the present invention adopts the cell structure schematic diagram when independent descending special use scrambler is set;
Fig. 3 is the base station transmission flow schematic diagram that downlink dedicated scrambler of the present invention is provided with;
Fig. 4 is the system configuration and the operation principle block diagram of portable terminal in the inventive method.
Embodiment
The present invention provides real time broadcasting service by the dedicated broadcast resource-special-purpose scrambler with wide coverage property is set in existing 3g mobile network.
Referring to Fig. 1, the network configuration when mobile communication system shown in Fig. 1 utilizes the dedicated broadcast resource that real time broadcasting service is provided.Live sports cast is offered real time broadcasting service content supplier, give information transmission server by content provider with this real sports program transmission, again by information transmission server with its accessing mobile communication network, in the air interface of mobile communications network,, be broadcast to portable terminal in real time by special-purpose broadcast resource is set.Herein, the broadcast resource of set special use is special-purpose scrambler.Can adopt the wired connection mode between content supplier, information transmission server and mobile communications network.
Referring to Fig. 2, the structure of wireless access network shown in the figure and operation principle are the system configurations after the newly-increased broadcasting service pattern, promptly provide the network configuration of real time broadcasting service by increasing special-purpose scrambler.The special-purpose scrambler of real time broadcasting service only is used for macrocell, and Microcell and picocell then do not need to increase the special-purpose scrambler of broadcasting service.
Realize in the technical scheme of real time broadcasting service by special-purpose scrambler is set of the present invention, wireless access network is divided into original mobile paging operation layer and newly-increased broadcasting service layer, original operation layer provides business such as voice conversation, transfer of data, wireless interconnected, video request program, and the broadcasting service layer of increase provides real time broadcasting service specially.
Because in certain zone, broadcasting service is identical, and in the Hierarchical Cell Structure of 3-G (Generation Three mobile communication system) (3G), the sub-district overlaps on the geographical position, therefore when implementing special-purpose scrambler scheme, only needing increases a descending scrambler that is exclusively used in broadcasting service in the sender of tectal each sub-district of original professional macrocell, each cell scrambling is identical, and channel code is also identical.This scrambler only needs transmitting broadcast information, and each portable terminal is shared the Common Pilot Channel of original sub-district.
Fig. 2 is illustrated under this technical scheme, and original operation layer and pbs layer overlap on the cell structure of macrocell layer fully.Original operation layer is divided into a plurality of sub-districts, neighbor cell uses different scramblers, as the scrambler among the figure 1, scrambler 2 ..., scrambler 7, original operation layer comprises uplink physical channel and down physical channel, down physical channel wherein comprises Common Pilot Channel, broadcast channel, paging channel and other channels, these channels in each sub-district respectively with the scrambler of respective cell sign, the scrambler 1 shown in figure.Pbs layer also is divided into a plurality of sub-districts, cell structure and original operation layer identical, neighbor cell uses identical scrambler, and its down physical channel comprises dedicated broadcast channel (another is for idle), and this dedicated broadcast channel all identifies with scrambler 1 ' in each sub-district.Both combinations, thus form original operation layer and the cell structure of pbs layer on macrocell layer, each sub-district is equipped with two special-purpose scramblers, the scrambler 1+ scrambler 1 ' shown in figure, scrambler 2+ scrambler 1 ' ..., scrambler 7+ scrambler 1 '.Wherein scrambler 1, scrambler 2 ..., scrambler 7 supports original business, remains unchanged, scrambler 1 ' is used to support the real time broadcasting service that increases newly.
Said structure is to original business, and the working method of portable terminal remains unchanged, and portable terminal can be supported real time broadcasting service simultaneously under idle pulley and connection mode.
Referring to Fig. 3, when sending real-time broadcast program, the base station sender is provided with the flow process of descending original professional scrambler and downlink dedicated scrambler, comprises the modulation of original business and the modulation and the spread spectrum process of spread spectrum process and real time broadcasting service shown in the figure.When the downlink dedicated scrambler was set, each sub-district was equipped with two scramblers, and the scrambling of original business remains unchanged, and promptly need increase the scrambling of broadcasting service.To the modulation and the spread spectrum of original business, be behind source encoding, chnnel coding, quaternary PSK (QPSK) and spread spectrum, in multiplier, use scrambler S1 scrambling.To the modulation and the spread spectrum of broadcasting service, also be behind source encoding, chnnel coding, quaternary PSK (QPSK) and spread spectrum, in multiplier, use scrambler S1 ' scrambling.Adder is the result after to two kinds of professional scramblings merge, and shared power amplification unit carries out sending behind the power amplifier.During enforcement, also can use alone power amplification unit, and then merge and send the result after two kinds of professional scramblings.
The base station sender can be removed this downlink dedicated scrambler S1 ' when not having broadcast program to send, thereby improves network capacity.
Referring to Fig. 4, implement the mobile terminal structure and the operation principle of the inventive method shown in the figure.Terminal comprises master controller 401, by source encoder 404, channel encoder 405, D/A (D/A) transducer 406, the transmitting element that radio frequency (RF) sender 407 connects to form, by radio frequency (RF) receiver 408, mould/number (A/D) transducer 409, frequency synthesizer 412, search module 416, parameter controller 417, RAKE merges receiver 410, automatic frequency correction (AFC) module 411, automatic gain correction (AGC) module 413, the channel decoder 414 of original business, the source decoder 415 of original business, the channel decoder 414 of broadcasting service ', the source decoder 415 of broadcasting service ', antenna 402 and duplexer 402 that receiving element that system synchronization module 418 connects to form and confession transmitting element and receiving element are shared.
Realizing the portable terminal of technical solution of the present invention, is on the basis of existing portable terminal hardware configuration, after special RAKE merges receiver 410, increase again one tunnel channel decoding module 414 of handling the broadcasting service scrambler ' with source decoding module 415 '.This special RAKE merges receiver 410, also is used to receive the dedicated broadcast business except that receiving original business, this RAKE merge the scrambler 1 of receiver demodulating unit ', channel code is dedicated broadcast channel sign indicating number S1 '.See Fig. 4.
Portable terminal can be supported broadcasting service under idle and connection mode, its basic process is identical.With the idle pulley is example, when the user need receive real-time broadcasting, terminal is switched to broadcast mode, and still be in idle pulley to original business of terminal this moment.
Terminal is when receiving broadcast service, if be in the macrocell, according to the result who the public guide frequency of this sub-district is carried out channel estimating, carry out the result of channel estimating with public guide frequency according to the stronger one or more macrocells of adjacent signal, the signal of a plurality of sub-districts of receiving is merged, demodulate the signal on the broadcast channel.At this moment, terminal still can be carried out cell selecting and gravity treatment, position renewal, paging receiving information etc. according to the flow process of original business.
Terminal is when receiving broadcast service, if be in the Microcell, perhaps in the picocell, except can not be from this sub-district obtains broadcasting service, other processing be identical with above-mentioned situation.When the broadcasting service signal quality can not reach business demand, need gravity treatment to a macrocell in sub-district to come receiving broadcast service.
For the descending scrambler that reduce to increase (as the scrambler among Fig. 21 ') to the interference of other Traffic Channels in the sub-district, portable terminal can utilize the information of the broadcast channel data that demodulates and known Channel Transmission condition, scrambler, channel code etc., estimate of the interference of the descending scrambler of increase to Traffic Channel, and from received signal, deduct this interference value, thereby improve the receptivity of other Traffic Channel.
Of the present inventionly in mobile communications network, provide the method for real time broadcasting service, be specially adapted in third generation code division multiple access (CDMA) mobile communication system, carry out real time broadcasting service by special-purpose scrambler is set.
Claims (7)
1. method that real time broadcasting service is provided in mobile communications network is characterized in that:
In the wireless access network of the mobile radio communication that contains former operation layer, set up to be exclusively used in the broadcasting service of real time broadcasting service layer is provided, establish independently downlink dedicated scrambler at this broadcasting service layer, broadcasting service layer sub-district overlaps with former operation layer subdistrict position, form former operation layer and add broadcasting service layer cell structure, this identical downlink dedicated scrambler is used in each sub-district, dedicated broadcast channel sign indicating number with identical only transmits real-time broadcast message;
Only the macrocell at non-Microcell or non-picocell increases described real time broadcasting service downlink dedicated scrambler, this increase is the scrambling operation that increases described downlink dedicated scrambler in the base station sender of tectal each sub-district of former professional macrocell, and described base station sender comprises the modulation of original business and the modulation and the spread spectrum of spread spectrum and real time broadcasting service;
Portable terminal is by switchable former operation layer and two kinds of mode of operation work of broadcasting service layer, and portable terminal remains unchanged to the working method of original business, shares the pilot channel of original sub-district, supports real time broadcasting service simultaneously under idle and connection mode.
2. a kind of method that real time broadcasting service is provided in mobile communications network according to claim 1, it is characterized in that: the information of described broadcasting service layer and the information of original operation layer, in the base station sender of tectal each sub-district of former professional macrocell, a public power amplifier or use separately power amplifier respectively.
3. a kind of method that real time broadcasting service is provided in mobile communications network according to claim 1 is characterized in that: the modulation of described original business and spread spectrum comprise source encoding to original business, chnnel coding, quaternary PSK, spread spectrum and with each cell downlink scrambler the spread spectrum result are carried out scrambling; The modulation of described real time broadcasting service and spread spectrum comprise source encoding to real time broadcasting service, chnnel coding, quaternary PSK, spread spectrum and with described downlink dedicated scrambler the spread spectrum result are carried out scrambling.
4. a kind of method that real time broadcasting service is provided in mobile communications network according to claim 1, it is characterized in that: described portable terminal, in the demodulating unit of RAKE receiver, also adopt and be exclusively used in the downlink dedicated scrambler that receives real time broadcasting service, with the channel decoding and the source decoding of carrying out original business and real time broadcasting service after RAKE receiver along separate routes, the channel code of RAKE receiver is that channel code is broadcast by described special-purpose factory.
5. a kind of method that real time broadcasting service is provided in mobile communications network according to claim 1, it is characterized in that: described former operation layer adds broadcasting service layer cell structure, is that scope, the position that former operation layer adds broadcasting service layer sub-district and former operation layer macrocell divided consistent.
6. a kind of method that real time broadcasting service is provided in mobile communications network according to claim 1 is characterized in that described portable terminal supports real time broadcasting service simultaneously under idle and connection mode, further comprises:
Switch to the portable terminal of broadcast mode from idle pulley, its original business still is in idle pulley;
When portable terminal is in the macrocell, be according to this sub-district and the result that the public guide frequency of the stronger one or more macrocells of adjacent signal carried out channel estimating, the signal of a plurality of sub-districts of receiving is merged, demodulate the signal on the dedicated broadcast channel, portable terminal carries out cell selecting according to former operation flow and gravity treatment, position are upgraded, paging receiving information;
When portable terminal is in Microcell or the picocell, be the result who carries out channel estimating according to the public guide frequency of the stronger one or more macrocells of adjacent signal, the signal of a plurality of sub-districts of receiving is merged, demodulate the signal on the dedicated broadcast channel, portable terminal carries out cell selecting according to former operation flow and gravity treatment, position are upgraded, paging receiving information.
7. a kind of method that real time broadcasting service is provided in mobile communications network according to claim 1, it is characterized in that: described portable terminal also utilizes the dedicated broadcast channel data that demodulate and known Channel Transmission condition, scrambler and channel code information, estimate the interference of the downlink dedicated scrambler that increased, and from received signal, deduct this interference value Traffic Channel.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021006083A CN100403669C (en) | 2002-01-23 | 2002-01-23 | Method for providing real time broadcasting service in mobile communication network |
| US10/502,502 US20050148297A1 (en) | 2002-01-23 | 2003-01-21 | Method for providing real− time broadcast service in the mobile communcation network |
| EP03701456A EP1475921B1 (en) | 2002-01-23 | 2003-01-21 | A method for providing real-time broadcast service in the mobile communication network |
| JP2003563150A JP2005516472A (en) | 2002-01-23 | 2003-01-21 | Method for providing a real-time broadcast service in a mobile communication network |
| AU2003203333A AU2003203333A1 (en) | 2002-01-23 | 2003-01-21 | A method for providing real-time broadcast service in the mobile communication network |
| DE60329464T DE60329464D1 (en) | 2002-01-23 | 2003-01-21 | METHOD FOR PROVIDING A REAL-TIME RUNNING SERVICE IN THE MOBILE COMMUNICATION NETWORK |
| AT03701456T ATE444658T1 (en) | 2002-01-23 | 2003-01-21 | METHOD FOR PROVIDING A REAL-TIME BROADCAST SERVICE ON A MOBILE COMMUNICATIONS NETWORK |
| PCT/CN2003/000053 WO2003063416A1 (en) | 2002-01-23 | 2003-01-21 | A method for providing real-time broadcast service in the mobile communication network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021006083A CN100403669C (en) | 2002-01-23 | 2002-01-23 | Method for providing real time broadcasting service in mobile communication network |
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| CN1434590A CN1434590A (en) | 2003-08-06 |
| CN100403669C true CN100403669C (en) | 2008-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB021006083A Expired - Lifetime CN100403669C (en) | 2002-01-23 | 2002-01-23 | Method for providing real time broadcasting service in mobile communication network |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414857C (en) * | 2006-06-29 | 2008-08-27 | 华为技术有限公司 | E-DCH radio link configuration method |
| CN101222661B (en) * | 2007-01-12 | 2011-08-10 | 中兴通讯股份有限公司 | Method and apparatus for configuring sharing control channel of high speed descending sharing channel |
| CN101272611B (en) * | 2007-03-23 | 2012-12-19 | 华为技术有限公司 | Method and subscriber terminal for controlling service receiving |
Citations (4)
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| US5341397A (en) * | 1992-04-13 | 1994-08-23 | Telefonaktiebolaget L M Ericsson | CDMA frequency allocation |
| WO1994029981A1 (en) * | 1993-06-14 | 1994-12-22 | Telefonaktiebolaget Lm Ericsson | Non-continuous transmission for seamless handover in ds-cdma systems |
| WO1999012295A1 (en) * | 1997-08-29 | 1999-03-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Cell searching in a cdma communications system |
| WO2000064059A2 (en) * | 1999-04-19 | 2000-10-26 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for implementing multiple carriers in cellular networks |
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2002
- 2002-01-23 CN CNB021006083A patent/CN100403669C/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5341397A (en) * | 1992-04-13 | 1994-08-23 | Telefonaktiebolaget L M Ericsson | CDMA frequency allocation |
| WO1994029981A1 (en) * | 1993-06-14 | 1994-12-22 | Telefonaktiebolaget Lm Ericsson | Non-continuous transmission for seamless handover in ds-cdma systems |
| WO1999012295A1 (en) * | 1997-08-29 | 1999-03-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Cell searching in a cdma communications system |
| WO2000064059A2 (en) * | 1999-04-19 | 2000-10-26 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for implementing multiple carriers in cellular networks |
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Application publication date: 20030806 Assignee: Apple Computer, Inc. Assignor: Huawei Technologies Co., Ltd. Contract record no.: 2015990000755 Denomination of invention: Method for providing real time broadcasting service in mobile communication metwork Granted publication date: 20080716 License type: Common License Record date: 20150827 |
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