CN101047878B - Method for using single slot network transceiving MBMS in TD-SCDMA - Google Patents

Abstract

This invention discloses a method for applying UTN to transmit and receive MBMS service in the TD-SCDMA including: 1, a wireless network controller sends UTN configuration information to user equipment by MBMS point to multiple points control information or system information based on the needs of services, in which, the UTN configuration information includes frequency points, time slots and UTN scramblers configured according to the time slot, 2, the controller sets up a SCCPCH channel for loading MBMS service with node B, and each time slot loading the MBMS service is corresponding to an UTN scrambler, node B applies the UTN scrambler to harass the MBMS data and transmits them on the SCCPCH, 3, the user device receives the MBMS service data on successive sub-public control physical channel according to point to multi-point control channel information or the UTN information received on the system information.

Description

Adopt the method for single slot network transceiving MBMS among the TD-SCDMA

Technical field

The present invention relates to field of wireless communication, particularly the receiving/transmission method of multimedia broadcasting and multicast service in the TDS-CDMA system (TD-SCDMA).

Background technology

Along with the fast development of Internet and popularizing of large-screen multi-functional mobile phone; A large amount of mobile data multimedia services emerge; Various high bandwidth multimedia services constantly occur; Like video conference, television broadcasting, video request program, advertisement, online education, interactive game etc., satisfy the business demand that the mobile subscriber constantly rises on the one hand, also bring new business growth point simultaneously for mobile operator.These mobile multi-media services require a plurality of users can receive identical data simultaneously, compare with general data, have characteristics such as data volume is big, longer duration, delay sensitive.

In order to effectively utilize mobile network resource; Third generation partner program (3rd Generation Partnership Project; Abbreviation 3GPP) multimedia broadcasting and multicast service (Multimedia Broadcast Multicast Service have been proposed; Be called for short MBMS); This business is a kind of from the technology of a data source to a plurality of targets transmission data, thereby realizes sharing of network (comprising core net and Access Network) resource, improves the utilance of Internet resources (especially air interface resource).The MBMS of 3GPP definition can not only realize the classes of messages multicast and the broadcasting of plain text low rate; And can also realize broadcasting and the multicast that high-speed multimedia is professional; Multiple rich video, audio frequency and multimedia service are provided; This has complied with following mobile data Development Trend undoubtedly, for the development of 3G provides better professional prospect.

The configuration of the professional radio bearer of MBMS can be adopted the bearer types of P-T-M (put multiple spot, also can write a Chinese character in simplified form PTM or ptm) and P-T-P (point-to-point also can be write a Chinese character in simplified form PTP or ptp).The professional PTM mode of MBMS uses common logical MTCH (MBMS PTM Traffic Channel, MBMS point multipoint message traffic channel) that all are added multicast service or the interested UE of broadcasting service is sent data; The MTCH logic channel is mapped to transmission channel FACH (Forward Access Channel; Forward access channel); Through physical channel Secondary CCPCH (Secondary Common Control Physical Channel; Less important Common Control Physical Channel is called for short SCCPCH) send at wave point.System side RNC (radio network controller) informs the configuration informations such as physical channel of the relevant MBMS business configuration of UE through MCCH (MBMS point-to-multipoint Control Channel, the MBMS point is to the multiple spot control channel) channel.

The MBMS related news of the last transmission of MCCH comprise: MBMS Access Information (MBMS access information); MBMS Common p-t-m rb Information (the public point to multi-point wireless beared information of MBMS); MBMS Current Cell p-t-m rb Information (MBMS current area P-T-M wireless loading information); MBMS General Information (MBMS general information); MBMS Modified services Information (MBMS revises business information); MBMS Unmodified services Information (MBMS does not revise business information) or the like.

UTRAN carries out the relevant system information broadcast of MBMS in system message (SIB5 and SIB5bis), comprise MBMS PTM control channel (MCCH:MBMS point-to-multipoint Control Channel) configuration information.

Can exist serious same frequency to disturb when in the TD-SCDMA multi-carrier frequency system, providing MBMS professional.Logic channel MTCH under the MBMS PTM mode is mapped to transmission channel FACH, and finally is carried on public physic channel SCCPCH.Because public physic channel SCCPCH uses omni-directional antenna transmission, and because MBMS business at a high speed mobile TV service normally takies many code channels.Therefore, when using the SCCPCH of omni-directional antenna transmission to carry out the continuous covering of MBMS business in many sub-districts, can cause the same frequency of serious minizone to disturb, make service quality can not get ensureing.

The problem of co-channel interference of minizone during for the solution identical networking, a kind of well accepted scheme is single-slot network (Uniform Timeslot Network, a UTN) technology.Require all neighbor cells to use same carrier, time slot, channel code, scrambler and basic midamble (training sequence) sign indicating number when sending the wireless signal of same MBMS business channels based on this technology; At a time on the crack; Different districts sends after all adopting identical scrambler to the wireless signal scrambling; UE can be regarded as multipath signal with the signal that comes from different base station when receiving, UE can obtain bigger performance gain after the multipath signal that receives is carried out multipath merging processing.Simultaneously, the UTN networking technology can be avoided the neighbor cell problem of co-channel interference in the TD-SCDMA system.

In existing 3G wireless network networking, the cell scrambling that disposes between the neighbor cell is different in twos, so that UE is according to the wireless signal of different scrambler differences from different districts.And the UTN mode is sent wireless signal, requires neighbor cell on identical frequency, time slot, to send the professional wireless signal of identical MBMS.This is different from the UTN scrambler of cell scrambling with regard to requiring system to the time slot configuration of sending the MBMS service signal.Like this, network side carries out scrambling process to the professional wireless signal of MBMS having disposed on the frequency time slot of UTN with the UTN scrambler, and the time slot that does not dispose UTN is used cell scrambling.UE receives wireless signal having disposed on the frequency time slot of UTN, uses the UTN scrambler of network configuration to carry out scramble process, and uses cell scrambling not disposing on the frequency time slot of UTN.But in existing 3GPP agreement, do not have definition how in the TD-SCDMA system, to dispose the needed UTN scrambling code information on specific frequency time slot of UTN, thereby can't carry out the MBMS data transmit-receive of UTN mode.

Summary of the invention

This present invention technical problem to be solved provides the method that adopts single slot network transceiving MBMS among a kind of TD-SCDMA.

In order to solve the problems of the technologies described above; The present invention provides on the other hand and has adopted single-slot network to send the method for multimedia broadcast-multicast service among a kind of TD-SCDMA; Said single-slot network is hereinafter to be referred as UTN, and said multimedia broadcast-multicast service may further comprise the steps hereinafter to be referred as MBMS:

(a) radio network controller according to service needed through the MBMS point to multiple spot control channel message; Perhaps pass through system message; Send the UTN configuration information to subscriber equipment, comprise frequency point information, time slot and UTN scrambler in the said UTN configuration information, said UTN scrambler is pressed the time slot configuration;

(b) set up the less important Common Control Physical Channel that carries the MBMS business between radio network controller and the Node B, carry the corresponding UTN scrambler of each professional time slot of MBMS, said less important Common Control Physical Channel is hereinafter to be referred as SCCPCH;

(c) Node B adopts said UTN scrambler that the MBMS data are carried out on SCCPCH, sending after the scrambling on the time slot that has disposed the UTN scrambler.

Further, in said step (a), said UTN configuration information through the MBMS point to the public point to multi-point wireless bearer messages of the MBMS on the multiple spot control channel; Be MBMS Common p-t-m RB Information; The perhaps general message of MBMS, i.e. MBMS General Information, perhaps MBMS current area P-T-M wireless loading message; Be MBMS Current Cell P-t-m RB Information; Perhaps system message, promptly system information sends to subscriber equipment.

Further, in said step (a), saidly be meant that according to service needed needs send same MBMS when professional to the continuous sub-district of a slice.

Further, in said step (b), said radio network controller is set up SCCPCH through setting up message to Node B transmission Common transport channel; The professional corresponding UTN scrambler of each time slot of said carrying MBMS is realized through following any one mode: radio network controller is the time slot configuration UTN scrambler at said SCCPCH place; At this moment, said Common transport channel is set up and is carried time slot and UTN scrambler in the message; Radio network controller is every SCCPCH configuration UTN scrambler, and the identical UTN scrambler of the configuration of the SCCPCH in the same time slot, and at this moment, said Common transport channel is set up and carried the UTN scrambler in the message.

Further, in said step (a), said frequency point information is concrete value of frequency point; Perhaps point to the index of a frequency list entry; Perhaps point to the sign of a frequency list entry, perhaps, have frequency point information in the said list entry for pointing to the index of certain tabulation.

In order to solve the problems of the technologies described above; The present invention also provides the method that adopts single-slot network receiving multimedia broadcast multicast service among a kind of TD-SCDMA; Said single-slot network is hereinafter to be referred as UTN, and said multimedia broadcast-multicast service may further comprise the steps hereinafter to be referred as MBMS:

(A) to the multiple spot control channel, the UTN configuration information of perhaps receiving on the system message (system information) comprises frequency point information, time slot and UTN scrambler in the said UTN configuration information from the MBMS point in the subscriber equipment preservation, and said UTN scrambler is pressed the time slot configuration;

(B) said subscriber equipment receives the MBMS business datum according to said UTN configuration information on less important Common Control Physical Channel.

Further; In said step (A), said subscriber equipment passes through the public point to multi-point wireless bearer messages of MBMS, i.e. MBMS Common p-t-m RB Information at the MBMS point to the multiple spot control channel; Perhaps through the general message of MBMS; Be MBMS General Information, perhaps through MBMS current area P-T-M wireless loading message, i.e. MBMS Current Cell P-t-m RB Information.Perhaps subscriber equipment is through system message, and promptly system information receives the UTN configuration information.

Further, in said step (A), said frequency point information is defined as concrete value of frequency point; Perhaps point to the index of a frequency list entry; Perhaps point to the sign of a frequency list entry, perhaps, have frequency point information in the said list entry for pointing to the index of certain tabulation.

Further, in said step (B), subscriber equipment carries out scramble process with the UTN scrambler in the said UTN configuration information to the MBMS business datum that receives on this time slot on the frequency time slot that has disposed the UTN scrambler.

In order to solve the problems of the technologies described above; The present invention also provides the method that adopts single-slot network transmission, receiving multimedia broadcast multicast service among a kind of TD-SCDMA; Said single-slot network is hereinafter to be referred as UTN, and said multimedia broadcast-multicast service may further comprise the steps hereinafter to be referred as MBMS:

(i) radio network controller according to service needed through the MBMS point to multiple spot control channel message; Perhaps system message (system information) is sent the UTN configuration information to subscriber equipment; Comprise frequency point information, time slot and UTN scrambler in the said UTN configuration information, said UTN scrambler is pressed the time slot configuration;

(ii) set up between radio network controller and the Node B and carry the professional less important Common Control Physical Channel of MBMS; Carry the corresponding UTN scrambler of each professional time slot of MBMS; Said less important Common Control Physical Channel is hereinafter to be referred as SCCPCH; Node B adopts said UTN scrambler that the MBMS data are carried out on SCCPCH, sending after the scrambling on the time slot that has disposed the UTN scrambler;

(ii) to multiple spot control channel message, the UTN configuration information of perhaps receiving on the system message receives the MBMS business datum to the subscriber equipment basis on less important Common Control Physical Channel from the MBMS point.

Further, in said step (i), said UTN configuration information through the MBMS point to the public point to multi-point wireless bearer messages of the MBMS on the multiple spot control channel; Be MBMS Common p-t-m RB Information; The perhaps general message of MBMS, i.e. MBMS General Information, perhaps MBMS current area P-T-M wireless loading message; Be MBMS Current Cell P-t-m RB Information; Perhaps through system message, promptly system information sends to subscriber equipment.

Further, in said step (i), saidly be meant that according to service needed needs send same MBMS when professional to the continuous sub-district of a slice.

Further, in said step (i), said frequency point information is defined as concrete value of frequency point, perhaps points to the index of a frequency list entry, perhaps points to the sign of a frequency list entry.Perhaps, have frequency point information in the said list entry for pointing to the index of a tabulation.

Further, said step (ii) in, said radio network controller is set up message and is set up SCCPCH through send Common transport channel to Node B; The professional corresponding UTN scrambler of each time slot of said carrying MBMS is realized through following any one mode: radio network controller is the time slot configuration UTN scrambler at said SCCPCH place; At this moment, said Common transport channel is set up and is carried time slot and UTN scrambler in the message; Radio network controller is every SCCPCH configuration UTN scrambler, and the identical UTN scrambler of the configuration of the SCCPCH in the same time slot, and at this moment, said Common transport channel is set up and carried the UTN scrambler in the message.

Further; Said step (iii) in; The said MBMS business datum that on less important Common Control Physical Channel, receives is meant; Said subscriber equipment receives the MBMS business datum on the frequency time slot that has disposed the UTN scrambler, with the UTN scrambler that receives in advance the MBMS business datum that receives on this time slot is carried out scramble process.

In order to solve the problems of the technologies described above; The invention provides the method that adopts single-slot network transmission, receiving multimedia broadcast multicast service among a kind of TD-SCDMA; Said single-slot network is hereinafter to be referred as UTN, and said multimedia broadcast-multicast service may further comprise the steps hereinafter to be referred as MBMS: (1) radio network controller according to service needed through the MBMS point to multiple spot control channel message; Perhaps pass through system message; Send the UTN configuration information to subscriber equipment, comprise frequency point information, time slot and UTN scrambler in the said UTN configuration information, said UTN scrambler is pressed the time slot configuration; (2) to multiple spot control channel message, the UTN configuration information of perhaps receiving on the system message receives the MBMS business datum to the subscriber equipment basis on less important Common Control Physical Channel from the MBMS point.

Further, in said step (1), said UTN configuration information through the MBMS point to the public point to multi-point wireless bearer messages of the MBMS on the multiple spot control channel; Be MBMS Common p-t-m RB Information; The perhaps general message of MBMS, i.e. MBMS General Information, perhaps MBMS current area P-T-M wireless loading message; Be MBMS Current Cell P-t-m RB Information; Perhaps through system message, promptly system information sends to subscriber equipment.

Further, in said step (2), saidly be meant that according to service needed needs send same MBMS when professional to the continuous sub-district of a slice.

Further, in said step (1), said frequency point information is concrete value of frequency point; Perhaps point to the index of a frequency list entry; Perhaps point to the sign of a frequency list entry, perhaps, have frequency point information in the said list entry for pointing to the index of certain tabulation.

Further; In said step (2); The said MBMS business datum that on less important Common Control Physical Channel, receives is meant; Said subscriber equipment receives the MBMS business datum on the frequency time slot that has disposed the UTN scrambler, with the UTN scrambler that receives in advance the MBMS business datum that receives on this time slot is carried out scramble process.

Adopt the method for the invention; Make and to realize that in the TD-SCDMA system single-slot network mode receives and dispatches the MBMS business datum, can avoid the neighbor cell problem of co-channel interference in the TD-SCDMA system, simultaneously; Make UE can obtain big performance gain aspect the receiving broadcast service signal; Improve the professional service quality of MBMS, improve the broadcasting service availability of frequency spectrum, the realization of UE side is also comparatively simple simultaneously.

Description of drawings

Fig. 1 adopts single-slot network to send the DFD of the professional method of MBMS among a kind of TD-SCDMA provided by the invention.

Embodiment

In TD SDMA TD-SCDMA system, a sub-district can dispose a plurality of carrier frequency.When adopting the UTN mode to send wireless signal, require neighbor cell on identical frequency, time slot, to send the professional wireless signal of identical MBMS.In the TD-SCDMA system, MBMS single-slot network Radio Resource can be used following information definition like this: frequency, time slot, UTN scrambler.Present embodiment increases the configuration information unit of supporting UTN through in the message of definition MBMS channel configuration, to each time slot that is configured to the UTN mode, defines the scrambler of frequency, time slot and the use at its place.

As shown in Figure 1, in the TD-SCDMA system, send the professional process of MBMS with the single-slot network mode, may further comprise the steps:

Step 110:RNC sends UTN configuration information through MCCH channel massage or system message (system information) to UE according to service needed; Comprise frequency point information, time slot and UTN scrambler in the said UTN configuration information, said UTN scrambler is pressed the time slot configuration;

The cell that defines in the configuration information is seen table 1; In MBMS Common p-t-m rb Information message, increased Frequency list (list of frequency); Comprise in the table: frequency point information and the time slot tabulation that needs dispose UTN on this frequency comprise information timeslot number and the scrambler that uses at this time slot in the tabulation of UTN time slot.Each values of parameters is not limited to this in the table, also desirable other values.

Wherein: frequency (Frequency) cell indicates the frequency at the time slot place that needs configuration UTN scrambler; Its form of expression can be value of frequency point particularly; Perhaps point to the index of a certain item in the frequency tabulation, perhaps for pointing to the ident value of a certain of a frequency tabulation; Time slot (Timeslot) cell indicates the time slot that needs configuration UTN scrambler; Scrambler (Cell Parameter ID) is the cell parameter sign, indicates the scrambler of the time slot use of configuration UTN.

Above-mentioned information unit in MBMS Common P-t-m RB Information message; Can also be configured in the MBMS General Information message or MBMS Current Cell P-t-m RB Information message in, or in the system information block (system information block).

When sending same MBMS to the continuous sub-district of a slice when professional, RNC need use identical UTN scrambler for these cell configuration on identical frequency, time slot.

Step 120: set up between radio network controller and the Node B and carry the professional SCCPCH of MBMS;

RNC can directly be the time slot configuration UTN scrambler at said SCCPCH place; Perhaps; Be the identical UTN scrambler of SCCPCH configuration in every SCCPCH configuration UTN scrambler and the same time slot; Like this, carry the professional SCCPCH of same MBMS and can dispose different UTN scramblers, perhaps at the identical scrambler of different time slot configuration at different time-gap.

RNC can also be scrambling code information of one group of SCCPCH configuration, and these SCCPCH form a CCTRCH (Coded Composite Transport Channel, coded combination transmission channel).

Radio network controller is set up SCCPCH through setting up message (common transport channel setup request) to Node B (NodeB) transmission Common transport channel.

When RNC directly is the time slot configuration UTN scrambler at said SCCPCH place; Then set up at the Common transport channel of setting up SCCPCH and carry time slot and UTN scrambler in the message, Common transport channel is set up the cell of definition in the request message (Common Transport Channel Setup Request) and is seen table 2; When RNC is every SCCPCH configuration UTN scrambler, then to set up and carry the UTN scrambler in the message at the Common transport channel of setting up SCCPCH, the cell that defines in the configuration information is seen table 3, in message, has increased the UTN scrambler to every physical channel SCCPCH.Each values of parameters is not limited to this in the table, also desirable other values.

Step 130, Node B carries out sending after the scrambling to the MBMS data according to said UTN scrambler.

Though RNC be for the time slot configuration at SCCPCH place the UTN scrambler; Still disposed the UTN scrambler for every SCCPCH; It perhaps is scrambler of CCTRCH configuration that one group of SCCPCH forms; On same time slot, have only a UTN scrambler, network side carries out scrambling process with the UTN scrambler to the MBMS business datum on the frequency time slot that has disposed the UTN scrambler, and said frequency time slot is meant the time slot on certain frequency that has disposed the UTN scrambler.And using cell scrambling to carry out scrambling process to the time slot that does not dispose UTN, it is identical with non-UTN mode that other handles the UTN mode.

Table 1 (overstriking person is for newly-increased in the table)

Table 2 (overstriking person is for newly-increased in the table)

Table 3 (overstriking person is for newly-increased in the table)

In the TD-SCDMA system, receive the professional process of MBMS, may further comprise the steps with the single-slot network mode:

Step 210, UE preserves from the MCCH channel, the UTN configuration information of perhaps receiving on the system message (system information);

Step 220, UE receives the MBMS data according to said UTN configuration information on the SCCPCH physical channel.

Which UE can know according to configuration is sent the professional frequency time slot of MBMS and has adopted the UTN mode; And know the used scrambler of frequency time slot that has disposed UTN; UE receives wireless signal on these time slots; Adopt the scrambler that is disposed that the MBMS data are carried out scramble process, and on the time slot that does not dispose UTN, use cell scrambling.

In the professional UTN mode networking of MBMS, at a distance the professional wireless signal of the MBMS of sub-district time slot N may drift to the adjacent time-slots N+1 of this sub-district, at this moment, signal can cause interference to the signal of this sub-district N+1 time slot at a distance.If time slot N adopts identical scrambler with time slot N+1, UE can't come distinguishing signal through the difference of wireless signal scrambler, removes and disturbs.The inventive method support is adopted as scrambler of each time slot configuration; So in above-mentioned situation; UE can remove remote interference signal, to avoid neighbor cell homogeneous frequency adjacent time slot interference through the different scrambler of difference; Simultaneously, UE has also obtained big performance gain when the receiving broadcast service signal.Above-mentioned description is especially favourable in the situation of a plurality of time slots to a MBMS business configuration.

The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included in protection scope of the present invention.

Claims (3)

1. adopt single-slot network to send the method for multimedia broadcast-multicast service among a TD-SCDMA, said single-slot network is hereinafter to be referred as UTN, and said multimedia broadcast-multicast service said method comprising the steps of hereinafter to be referred as MBMS:

(a) radio network controller sends UTN configuration information to multiple spot control channel message or system message to subscriber equipment through the MBMS point according to service needed; Comprise frequency point information, time slot and UTN scrambler in the said UTN configuration information, said UTN scrambler is pressed the time slot configuration; Said frequency point information is concrete value of frequency point, perhaps points to the index of a frequency list entry, perhaps points to the sign of a frequency list entry, perhaps for pointing to the index of a tabulation, has frequency point information in this list entry;

(b) set up the less important Common Control Physical Channel that carries the MBMS business between radio network controller and the Node B, carry the corresponding UTN scrambler of each professional time slot of MBMS, said less important Common Control Physical Channel is hereinafter to be referred as SCCPCH;

(c) Node B adopts said UTN scrambler that the MBMS data are carried out on SCCPCH, sending after the scrambling on the time slot that has disposed the UTN scrambler.

2. adopt the method for single-slot network receiving multimedia broadcast multicast service among the TD-SCDMA, said single-slot network is hereinafter to be referred as UTN, and said multimedia broadcast-multicast service may further comprise the steps hereinafter to be referred as MBMS:

(A) to the multiple spot control channel, the UTN configuration information of perhaps receiving on the system message comprises frequency point information, time slot and UTN scrambler in the said UTN configuration information from the MBMS point in the subscriber equipment preservation, and said UTN scrambler is pressed the time slot configuration; Said frequency point information is defined as concrete value of frequency point, perhaps points to the index of a frequency list entry, perhaps points to the sign of a frequency list entry, perhaps for pointing to the index of a tabulation, has frequency point information in the said list entry.

(B) said subscriber equipment receives the MBMS business datum according to said UTN configuration information on less important Common Control Physical Channel.

3. adopt among the TD-SCDMA that single-slot network sends, the method for receiving multimedia broadcast multicast service, said single-slot network is hereinafter to be referred as UTN, and said multimedia broadcast-multicast service may further comprise the steps hereinafter to be referred as MBMS:

(i) radio network controller sends UTN configuration information to multiple spot control channel message or system message to subscriber equipment through the MBMS point according to service needed; Comprise frequency point information, time slot and UTN scrambler in the said UTN configuration information, said UTN scrambler is pressed the time slot configuration; Said frequency point information is defined as concrete value of frequency point, perhaps points to the index of a frequency list entry, perhaps points to the sign of a frequency list entry, perhaps for pointing to the index of a tabulation, has frequency point information in this list entry.

(ii) set up between radio network controller and the Node B and carry the professional less important Common Control Physical Channel of MBMS; Carry the corresponding UTN scrambler of each professional time slot of MBMS; Said less important Common Control Physical Channel is hereinafter to be referred as SCCPCH; Node B adopts said UTN scrambler that the MBMS data are carried out on SCCPCH, sending after the scrambling on the time slot that has disposed the UTN scrambler;

(iii) subscriber equipment receives the MBMS business datum according to from the MBMS point to multiple spot control channel message or the UTN configuration information received of system message on less important Common Control Physical Channel.

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