CN100407598C - A multi-carrier based public physical channel assignment method - Google Patents
A multi-carrier based public physical channel assignment method Download PDFInfo
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Abstract
The present invention relates to a multi-carrier based public physical channel allocating method. The present invention comprises steps that in view of an area covered by multiple carriers, for each cell /sector, one carrier in N allocated carriers is used as a first main carrier, another carrier is determined as a second main carrier, the rest carriers are used as assistant carriers, and one assistant carrier can be used as a backup assistant carrier for the first main carrier or the second main carrier; in the same cell/sector, the first main carrier, the second main carrier and the assistant carriers use the same scrambling codes and the same basic training sequence; public physical channels are configured on the first main carrier or the second main carrier. The method of the present invention overcomes the problems existing in the coverage area, the system capacity, the reliability, etc. of multi-carrier based TD-SCDMA communication systems.
Description
Technical field
The present invention relates to a kind of public physic channel distribution method of wireless communication system, relate in particular in the TD-SCDMA communication system public physic channel distribution method based on multicarrier.
Background technology
Present TD-SCDMA (Time Division-Synchronous Code Division MultipleAccess, be LCR TDD) do not consider the multicarrier characteristic in the standard, mainly be included in the following 3GPP consensus standard about the allocative decision of TD-SCDMA public physic channel:
(1)3GPP?TS?25.221：“Physical?channels?and?mapping?of?transport?channelsonto?physical?channels(TDD)”
(2)3GPP?TS?25.222：“Multiplexing?and?channel?coding(TDD)”
(3)3GPP?TS?25.223：“Spreading?and?modulation(TDD)”
(4)3GPP?TS?25.224：“Physical?Layer?Procedures(TDD)”
(5)3GPP?TS?25.331：“Radio?Resource?Control(RRC)”
By analyzing as can be known, the Uu interface all carries out at a carrier wave for operation, the configuration of Radio Resource in the above-mentioned document, and a sub-district also is only to have disposed an absolute frequency point number in the process that the Iub interface sub-district is set up.If employing multicarrier, then each carrier wave can be described as a logic district, and each logic district all needs to send separately pilot tone and broadcast message, each carrier wave of so much carrier system all must configuration one overlap complete common signal channel, broadcast channel wherein (BCH), forward access channel (FACH) and paging channel (PCH) all adopt full sub-district replace mode, Multi-Carrier basestation (Node B) not only requires very high to transmitter power when real network is planned like this, and the interference of intercarrier broadcast channel is also very serious under the situation of identical networking, if user terminal (UE) is positioned at the sub-district intersection, then certainly exist the Cell searching difficulty, UE measures problems such as complexity and switching difficulty, and system effectiveness is lower.
In addition, according to present TD-SCDMA standard, comprise 32 code characters altogether, each code character only comprises 8 SYNC_UL sign indicating numbers, promptly in random access procedure, UE has only 8 SYNC_UL sign indicating numbers available, therefore the phenomenon that then occurs access interference easily or be difficult to insert at user's close quarters.
Summary of the invention
Technical problem to be solved by this invention provides a kind of public physic channel distribution method based on multicarrier, overcomes the problems such as coverage, power system capacity and reliability based on the TD-SCDMA communication system of multicarrier.
The present invention further provides a kind of public physic channel distribution method, solve the Cell searching difficulty, the UE that exist when user terminal UE is in the junction, sub-district and measure problems such as complexity and switching difficulty, improve system effectiveness based on multicarrier.
The present invention also further provides a kind of public physic channel distribution method based on multicarrier, solves the phenomenon that occurs access interference easily or be difficult to insert at user's close quarters.
To achieve these goals, the invention provides a kind of public physic channel distribution method, it is characterized in that, comprise the steps: based on multicarrier
Zone at the multicarrier covering, to each cell/section, determine that from N the carrier wave that distributes a carrier wave is as first main carrier, determine that the another one carrier wave is as second main carrier, all the other carrier waves are as auxilliary carrier wave, and one of them auxilliary carrier wave can be used as the auxilliary carrier wave of backup of first main carrier or second main carrier;
In same cell/section, first main carrier, second main carrier and auxilliary carrier wave use identical scrambler and basic training sequences;
Public physic channel is configured on described first main carrier and/or second main carrier.
The above-mentioned public physic channel distribution method based on multicarrier, its characteristics are that the configuration step of described public physic channel can comprise the steps:
Configuration Primary Common Control Physical Channel P-CCPCH, the data that are used to carry broadcast channel BCH provide the system information broadcast under the replace mode of full sub-district;
Dispose auxiliary publish control physical channel S-CCPCH, be used for the data of bearing call channel PCH and forward access channel FACH;
Configuration rapid physical Random Access Channel FPACH is used for supporting to set up uplink synchronous;
Configures physical Random Access Channel PRACH, the data that are used to carry Random Access Channel RACH;
Configurating downlink pilot channel DwPCH is used for down-going synchronous;
Collocating uplink pilot channel UpPCH is used for uplink synchronous;
Configuration Page Indication Channel PICH is used for the bearing call indication information, uses with paging channel PCH pairing;
Configures physical Uplink Shared Channel PUSCH, the data that are used to carry Uplink Shared Channel USCH; And
Configures physical DSCH Downlink Shared Channel PDSCH is used for the data of bearing downlink shared channel DSCH.
Above-mentioned public physic channel distribution method based on multicarrier, its characteristics are, described Primary Common Control Physical Channel P-CCPCH comprises the first Primary Common Control Physical Channel P-CCPCH1 and the second Primary Common Control Physical Channel P-CCPCH2, and its concrete configuration step is as follows:
Primary Common Control Physical Channel P-CCPCH fixed configurations is to preceding two code channels of the time slot TS0 of first main carrier;
The channel code of the first Primary Common Control Physical Channel P-CCPCH1 and the second Primary Common Control Physical Channel P-CCPCH2 is respectively c
Q=16 (k=1)And c
Q=16 (k=2)
Training sequence is m among the time slot TS0 of first main carrier
(1)And m
(2), this training sequence is assigned to Primary Common Control Physical Channel P-CCPCH to support transmission diversity and beacon function;
Adopt the fixedly spread spectrum mode of spreading factor SF=16;
Full sub-district replace mode is not carried out wave beam forming.
The above-mentioned public physic channel distribution method based on multicarrier, its characteristics are that the concrete configuration step of described auxiliary publish control physical channel S-CCPCH is as follows:
Described auxiliary publish control physical channel S-CCPCH is configured on the time slot TS0 of described first main carrier or second main carrier;
Adopt the fixedly spread spectrum mode of spreading factor SF=16;
The code word that described auxiliary publish control physical channel S-CCPCH is adopted is broadcasted in broadcast channel BCH;
Full sub-district replace mode is not carried out wave beam forming.
Above-mentioned public physic channel distribution method based on multicarrier, its characteristics are, described physical access channel FPACH is as base station node B replying the uplink pilot time slot UpPTS signal of detected user terminal UE, do not carry transmitting channel information, there are not mapping relations with transmission channel, the content of described physical access channel FPACH comprises synchronous adjustment, power adjustment etc., is single burst information, and the concrete configuration of described physical access channel FPACH is as follows:
Described physical access channel FPACH is configured on described first main carrier and/or second main carrier;
Adopt the fixedly spread spectrum mode of spreading factor SF=16;
The spreading code that described physical access channel FPACH adopted, training sequence and time slot position are broadcasted by network configuration and in broadcast channel BCH;
Can adopt wave beam forming.
The above-mentioned public physic channel distribution method based on multicarrier, its characteristics are that described Physical Random Access Channel PRACH concrete configuration is as follows:
Described Physical Random Access Channel PRACH is configured on first main carrier and/or second main carrier;
Spreading factor SF can select SF=16,8,4 spread spectrum mode;
Being configured among the broadcast channel BCH of described Physical Random Access Channel PRACH broadcasted;
Above-mentioned public physic channel distribution method based on multicarrier; its characteristics are; the position of described downlink pilot frequency channel DwPCH is identical with descending pilot frequency time slot DwPTS with content; the burst structure of described downlink pilot frequency channel DwPCH comprises the protection interval of 32 chips and the down-going synchronous SYNC_DL sign indicating number of 64 chips; described down-going synchronous SYNC_DL sign indicating number is one group of PN (pseudo noise) sequence; be used to distinguish neighbor cell, concrete configuration is as follows:
Described downlink pilot frequency channel DwPCH fixed configurations is on first main carrier;
Described down-going synchronous SYNC_DL sign indicating number is spectrum-spreading and scrambling not;
Transmitting power is constant, and is disposed by high level;
Full sub-district replace mode is not carried out wave beam forming.
The above-mentioned public physic channel distribution method based on multicarrier, its characteristics are that the position of described ascending pilot channel UpPCH is identical with uplink pilot time slot UpPTS with content.Its burst structure comprises the protection interval of uplink synchronous SYNC_UL sign indicating number and 32 chips of 128 chips; described uplink synchronous SYNC_UL sign indicating number is one group of PN (pseudo noise) sequence; be used for distinguishing different user terminal UE at random access procedure, concrete configuration is as follows:
Described ascending pilot channel UpPCH is configured on first main carrier and/or second main carrier;
Described uplink synchronous SYNC_UL sign indicating number is spectrum-spreading and scrambling not.
The above-mentioned public physic channel distribution method based on multicarrier, its characteristics are that described Page Indication Channel PICH concrete configuration is as follows:
Described Page Indication Channel PICH is configured on first main carrier or second main carrier;
Adopt the fixedly spread spectrum mode of spreading factor SF=16.
The above-mentioned public physic channel distribution method based on multicarrier, its characteristics are that described Physical Uplink Shared Channel PUSCH concrete configuration is as follows:
Described Physical Uplink Shared Channel PUSCH is configured on first main carrier or second main carrier;
Spreading factor SF can select SF=1,2,4,8,16 spread spectrum mode.
The above-mentioned public physic channel distribution method based on multicarrier, its characteristics are that described Physical Downlink Shared Channel PDSCH concrete configuration is as follows:
Described Physical Downlink Shared Channel PDSCH is configured on first main carrier or second main carrier;
Spreading factor SF can select SF=1,16 spread spectrum mode.
The above-mentioned public physic channel distribution method based on multicarrier, its characteristics are, during as if the carrier number N=1 in the cell/section, then only have first main carrier, and described public physic channel all is configured on described first main carrier; If N=2 then only exists first main carrier and second main carrier, described public physic channel is configurable on described first main carrier and/or second main carrier; If N 〉=3 had then both existed first main carrier, second main carrier, also there is auxilliary carrier wave, described public physic channel is configurable on described first main carrier, second main carrier.
The above-mentioned public physic channel distribution method based on multicarrier, its characteristics are that if carrier number N 〉=3 in the cell/section then exist first main carrier, second main carrier and auxilliary carrier wave simultaneously, the processing method of wherein said auxilliary carrier wave is as follows:
If N=3, then unique auxilliary carrier wave can be used as the auxilliary carrier wave of backup of first main carrier or second main carrier, resources such as the code channel that the public physic channel that is disposed with first main carrier and second main carrier on the auxilliary carrier wave of described backup is corresponding, time slot will keep, and all the other code channels, time interval resource on the auxilliary carrier wave of described backup can be used for DPCH; And, when the signal processing channel of first main carrier or the second main carrier correspondence breaks down, then the public physic channel that disposes on first main carrier or second main carrier can successfully be configured to the correspondence position on the auxilliary carrier wave of backup, and the auxilliary carrier wave of described backup will substitute and become first main carrier or second main carrier;
If then there are two or more auxilliary carrier waves in N 〉=4, to assist the carrier wave as backup except that an auxilliary carrier wave, all the other auxilliary carrier waves all can be used for DPCH.
The above-mentioned public physic channel distribution method based on multicarrier, its characteristics are that described carrier wave configuration and business configuration also satisfy following condition:
Between different adjacent cell/sectors, dispose the frequency of described first main carrier and second main carrier, make the frequency of first main carrier and second main carrier inequality;
Between different adjacent cell/sectors, the frequency configuration of the auxilliary carrier wave of backup is different;
Same user's multislot services is configured on the same carrier wave;
Same user's uplink and downlink business configuration is on same carrier wave;
Ascending pilot channel, rapid physical accidental channel, Physical Random Access Channel are configured on the same carrier wave, both can only be configured on described first main carrier, also can all configurations on described first main carrier and second main carrier.
The above-mentioned public physic channel distribution method based on multicarrier, its characteristics are that described auxiliary publish control physical channel S-CCPCH and Page Indication Channel PICH are configured on the same carrier wave.
The above-mentioned public physic channel distribution method based on multicarrier, its characteristics are that when N=1, then described ascending pilot channel UpPCH, rapid physical accidental channel FPACH, Physical Random Access Channel PRACH only are configured on described first main carrier; When N 〉=2, there are first main carrier and second main carrier simultaneously, and because first main carrier is different with the frequency of second main carrier configuration, then described ascending pilot channel UpPCH, rapid physical accidental channel FPACH, Physical Random Access Channel PRACH both can only be configured on described first main carrier, also can all configurations on described first main carrier and second main carrier.
The present invention is in conjunction with the characteristics of TD-SCDMA communication system, provided a kind of public physic channel distribution method based on multicarrier, system reliability, power system capacity and system effectiveness have been improved simultaneously, increase cell/section coverage and Cell searching speed, reduced the complexity that UE measures and switch the sub-district.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the physical channel signal form of TD-SCDMA communication system of the present invention;
Fig. 2 is the subframe structure of TD-SCDMA communication system of the present invention.
Embodiment
By of the detailed description of reference accompanying drawing of the present invention, will make purpose of the present invention, technical scheme and advantage clearer, easy to understand to the specific embodiment of the invention.
As shown in Figure 1, 2, the wireless frame length of TD-SCDMA is 10ms, is divided into two identical in structure 5ms subframes.Each subframe is divided into 7 conventional time slots and 3 special time slots again, and 3 special time slots are respectively descending pilot frequency time slot DwPTS, main protection time slot GP and uplink pilot time slot UpPTS.In 7 conventional time slots, TS0 always distributes to down link, and TS1 always distributes up link.Separate by transfer point between ascending time slot and the descending time slot.In the TD-SCDMA communication system, each subframe comprises 2 transfer points, by disposing the number of uplink and downlink time slot neatly, makes TD-SCDMA be applicable to up-downgoing symmetry and asymmetrical business model.
At the zone that multicarrier covers, to each cell/section, from N the carrier wave that distributes, determine one and determine the another one carrier wave as second main carrier that all the other are as auxilliary carrier wave as first main carrier.
If during the carrier number N=1 in the cell/section, then only have first main carrier; If N=2 then only exists first main carrier and second main carrier; If N 〉=3 had then both existed first main carrier, second main carrier, also there is auxilliary carrier wave.
At the communication system based on multicarrier, the carrier number N in the cell/section satisfies N 〉=3 usually.
If N=3, so unique auxilliary carrier wave can be used as the backup carrier wave of first main carrier or second main carrier, is called the auxilliary carrier wave of backup.Resources such as the code channel that the public physic channel that is disposed with first main carrier and second main carrier on the auxilliary carrier wave of backup is corresponding, time slot will keep, and all the other code channels, time interval resource on the auxilliary carrier wave of backup can be used for DPCH.When the signal processing channel of first main carrier or the second main carrier correspondence breaks down, then the public physic channel that disposes on first main carrier or second main carrier can successfully be configured to the correspondence position on the auxilliary carrier wave of backup, i.e. the auxilliary carrier wave of backup will substitute and become first main carrier or second main carrier.
If there are two or more auxilliary carrier waves so in N 〉=4, to assist the carrier wave as backup except that an auxilliary carrier wave, all the other auxilliary carrier waves all can be used for DPCH.
Between different adjacent cell/sectors, the frequency configuration of first main carrier, second main carrier and the auxilliary carrier wave of backup is different.
Having the situation of handling a carrier capability, two carrier capability, a plurality of (more than three or three) carrier capability with Node B/UE respectively below is that example illustrates method of the present invention, but not as limitation of the present invention.
Embodiment one, only has the situation of handling a carrier capability for Node B/UE:
Because Node B/UE can only handle a carrier wave simultaneously, so public physic channel all is configured on first main carrier.
For P-CCPCH, its collocation method is as follows:
1) P-CCPCH is configured on preceding two code channels of TS0 of first main carrier;
2) channel code of P-CCPCH1 and P-CCPCH2 is respectively c
Q=16 (k=1)And c
Q=16 (k=2)
3) training sequence m among the TS0
(1)And m
(2)Distribute to P-CCPCH to support transmission diversity and beacon function;
4) the fixedly spread spectrum mode of employing spreading factor SF=16;
5) full sub-district replace mode is not carried out wave beam forming.
For S-CCPCH, its collocation method is as follows:
1) S-CCPCH is configured on the TS0 of first main carrier;
2) the fixedly spread spectrum mode of employing spreading factor SF=16;
3) code word that S-CCPCH adopted is broadcasted in BCH;
4) full sub-district replace mode is not carried out wave beam forming.
For FPACH, its collocation method is as follows:
1) FPACH is configured on first main carrier;
2) the fixedly spread spectrum mode of employing spreading factor SF=16;
3) spreading code that FPACH adopted, training sequence and time slot position are broadcasted by network configuration and in BCH;
4) can adopt wave beam forming.
For PRACH, its collocation method is as follows:
1) PRACH is configured on first main carrier;
2) spreading factor can be selected SF=16,8,4 spread spectrum mode;
3) configuration of PRACH (time slot that is adopted and spreading code) is broadcasted in BCH.
For DwPCH, its collocation method is as follows:
1) DwPCH is configured on first main carrier;
2) SYNC_DL sign indicating number spectrum-spreading and scrambling not;
3) transmitting power is constant, and is disposed by high level;
4) full sub-district replace mode is not carried out wave beam forming.
For UpPCH, its collocation method is as follows:
1) UpPCH is configured on first main carrier;
2) SYNC_UL sign indicating number spectrum-spreading and scrambling not.
For Page Indication Channel (PICH), its collocation method is as follows:
1) PICH is configured on first main carrier;
2) the fixedly spread spectrum mode of employing spreading factor SF=16.
For Physical Uplink Shared Channel (PUSCH), its collocation method is as follows:
1) PUSCH is configured in first main carrier;
2) spreading factor can be selected SF=1,2,4,8,16 spread spectrum mode.
For Physical Downlink Shared Channel (PDSCH), its collocation method is as follows:
1) PDSCH is configured on first main carrier;
2) spreading factor can be selected SF=1,16 spread spectrum mode.
Because P-CCPCH and S-CCPCH all are configured on the TS0 of first main carrier, and all adopt full sub-district replace mode, and DPCH adopts the wave beam forming technology usually, and this sub-district replace mode of will demanding perfection must rely on and improve the difference that the code channel transmitting power remedies coverage between the two.Be subjected to the restriction of total transmitting power in the time slot, so P-CCPCH and the S-CCPCH same time slot on the multiplexing same carrier wave simultaneously, but adopt the TS0 of multiplexing first main carrier of time division way.
In this case, TS0 on second main carrier and the auxilliary carrier wave can not use, or as DPCH carrying non-real time service, when the TS0 of first main carrier went up no BCH, PCH, FACH data, UE just can hop jump handle corresponding non-real time service data on second main carrier or auxilliary carrier wave.
Embodiment two, have the situation of handling two carrier capability simultaneously for Node B/UE:
Because Node B/UE can handle two carrier waves simultaneously, therefore in the configuration of public physic channel, just there is certain flexibility.
For P-CCPCH, its collocation method is as follows:
1) P-CCPCH is configured on preceding two code channels of TS0 of first main carrier;
2) channel code of P-CCPCH1 and P-CCPCH2 is respectively c
Q=16 (k=1)And c
Q=16 (k=2)
3) training sequence m among the TS0
(1)And m
(2)Distribute to P-CCPCH to support transmission diversity and beacon function;
4) the fixedly spread spectrum mode of employing spreading factor SF=16;
5) full sub-district replace mode is not carried out wave beam forming.
For S-CCPCH, its collocation method is as follows:
1) S-CCPCH is configured on the TS0 of first main carrier or second main carrier;
2) the fixedly spread spectrum mode of employing spreading factor SF=16;
3) code word that S-CCPCH adopted is broadcasted in BCH;
4) full sub-district replace mode is not carried out wave beam forming.
For FPACH, its collocation method is as follows:
1) FPACH is configured on first main carrier and/or second main carrier;
2) the fixedly spread spectrum mode of employing spreading factor SF=16;
3) spreading code that FPACH adopted, training sequence and time slot position are broadcasted by network configuration and in BCH;
4) can adopt wave beam forming.
For PRACH, its collocation method is as follows:
1) PRACH is configured on first main carrier and/or second main carrier;
2) spreading factor can be selected SF=16,8,4 spread spectrum mode;
3) configuration of PRACH (time slot that is adopted and spreading code) is broadcasted in BCH.
For DwPCH, its collocation method is as follows:
1) DwPCH is configured on first main carrier;
2) SYNC_DL sign indicating number spectrum-spreading and scrambling not;
3) transmitting power is constant, and is disposed by high level;
4) full sub-district replace mode is not carried out wave beam forming.
For UpPCH, its collocation method is as follows:
1) UpPCH is configured on first main carrier and/or second main carrier;
2) SYNC_UL sign indicating number spectrum-spreading and scrambling not.
For Page Indication Channel (PICH), its collocation method is as follows:
1) PICH is configured on first main carrier or second main carrier;
2) the fixedly spread spectrum mode of employing spreading factor SF=16.
For Physical Uplink Shared Channel (PUSCH), its collocation method is as follows:
1) PUSCH is configured on first main carrier or second main carrier;
2) spreading factor can be selected SF=1,2,4,8,16 spread spectrum mode.
For Physical Downlink Shared Channel (PDSCH), its collocation method is as follows:
1) PDSCH is configured on first main carrier or second main carrier;
2) spreading factor can be selected SF=1,16 spread spectrum mode.
The configuration mode of S-CCPCH comprises two kinds:
First kind of mode, S-CCPCH and P-CCPCH are configured on the TS0 of first main carrier together.Like this, the TS0 of second main carrier can be configured to DPCH, and real-time service and non-real time service all are suitable for.TS0 on the auxilliary in addition carrier wave can not use, or as DPCH carrying non-real time service, when the TS0 of first main carrier went up no BCH, PCH, FACH data, UE just can hop jump handle corresponding non-real time service data to auxilliary carrier wave.
The second way, S-CCPCH is configured on the TS0 of second main carrier.Because P-CCPCH is configured in respectively on the different carrier waves with S-CCPCH, so S-CCPCH just can be simultaneously together multiplexing with P-CCPCH, and this configuration mode is specially adapted to the bigger situation of cell/sector capacity.TS0 on the auxilliary in addition carrier wave can not use, or as DPCH carrying non-real time service, when the TS0 of the last no BCH data of the TS0 of first main carrier or second main carrier went up no PCH, FACH data, UE just can hop jump handle corresponding non-real time service data to auxilliary carrier wave.
Because PICH is used for the bearing call indication information, use with paging channel (PCH) pairing, so suggestion PICH and S-CCPCH are configured on the same carrier wave.
Because the random access procedure of UpPCH, FPACH and PRACH and UE is closely related, therefore advise that UpPCH, FPACH and PRACH are configured on the same carrier wave.
According to present TD-SCDMA standard, comprise 32 code characters altogether, each code character only comprises 8 SYNC_UL sign indicating numbers, promptly in random access procedure, UE has only 8 SYNC_UL sign indicating numbers available, therefore the phenomenon that then occurs access interference easily or be difficult to insert at user's close quarters.It is as follows solving a kind of method that inserts difficult problem:
Because Node B/UE has and handles two carrier capability simultaneously, and the frequency of first main carrier and second main carrier configuration is different, so can on first main carrier, distribute 8 SYNC_UL sign indicating numbers in a certain code character, and on second main carrier, also distribute 8 identical SYNC_UL sign indicating numbers, certainly will be able to improve the probability of success (synchronous detecting probability) that inserts at random like this.After Node B successfully detects the SYNC_UL sign indicating number of UE transmission, then can go up to UE and send acknowledge message at the FPACH of corresponding carriers (first main carrier or second main carrier), UE can go up to Node B at the PRACH of corresponding carriers (first main carrier or second main carrier) and send access information then, last Node B sends to UE with the information of necessity again, and call setup is finished.Just first main carrier and second main carrier have all disposed UpPCH, FPACH and PRACH.
Embodiment three, have the situation of handling a plurality of (more than three or three) carrier capability simultaneously for Node B/UE:
Although Node B/UE simultaneously can handle three or three above carrier waves, yet still to have the situation of handling two carrier capability simultaneously identical with Node B/UE in the configuration of public physic channel.
For P-CCPCH, its collocation method is as follows:
1) P-CCPCH is configured on preceding two code channels of TS0 of first main carrier;
2) channel code of P-CCPCH1 and P-CCPCH2 is respectively c
Q=16 (k=1)And c
Q=16 (k=2)
3) training sequence m among the TS0
(1)And m
(2)Distribute to P-CCPCH to support transmission diversity and beacon function;
4) the fixedly spread spectrum mode of employing spreading factor SF=16;
5) full sub-district replace mode is not carried out wave beam forming.
For S-CCPCH, its collocation method is as follows:
1) S-CCPCH is configured on the TS0 of first main carrier or second main carrier;
2) the fixedly spread spectrum mode of employing spreading factor SF=16;
3) code word that S-CCPCH adopted is broadcasted in BCH;
4) full sub-district replace mode is not carried out wave beam forming.
For FPACH, its collocation method is as follows:
1) FPACH is configured on first main carrier and/or second main carrier;
2) the fixedly spread spectrum mode of employing spreading factor SF=16;
3) spreading code that FPACH adopted, training sequence and time slot position are broadcasted by network configuration and in BCH;
4) can adopt wave beam forming.
For PRACH, its configuration is as follows:
1) PRACH is configured on first main carrier and/or second main carrier;
2) spreading factor can be selected SF=16,8,4 spread spectrum mode;
3) configuration of PRACH (time slot that is adopted and spreading code) is broadcasted in BCH.
For DwPCH, its configuration is as follows:
1) DwPCH is configured on first main carrier;
2) SYNC_DL sign indicating number spectrum-spreading and scrambling not;
3) transmitting power is constant, and is disposed by high level;
4) full sub-district replace mode is not carried out wave beam forming.
For UpPCH, its collocation method is as follows:
1) UpPCH is configured on first main carrier and/or second main carrier;
2) SYNC_UL sign indicating number spectrum-spreading and scrambling not.
For Page Indication Channel (PICH), its collocation method is as follows:
1) PICH is configured on first main carrier or second main carrier
2) the fixedly spread spectrum mode of employing spreading factor SF=16
For Physical Uplink Shared Channel (PUSCH), its collocation method is as follows:
1) PUSCH is configured on first main carrier or second main carrier;
2) spreading factor can be selected SF=1,2,4,8,16 spread spectrum mode.
For Physical Downlink Shared Channel (PDSCH), its collocation method is as follows:
1) PDSCH is configured on first main carrier or second main carrier;
2) spreading factor can be selected SF=1,16 spread spectrum mode.
The configuration mode of S-CCPCH comprises two kinds:
First kind of mode, S-CCPCH and P-CCPCH are configured on the TS0 of first main carrier together.Like this, the TS0 of second main carrier can be configured to DPCH, and real-time service and non-real time service all are suitable for.The residue carrier processing ability of Node B/UE can be distributed to auxilliary carrier wave and (comprises M-2 auxilliary carrier wave at most in addition, Node B/UE can simultaneously treated carrier number), the TS0 of corresponding auxilliary carrier wave can be configured to DPCH, is equally applicable to real-time service and non-real time service.TS0 on all the other auxilliary carrier waves except above-mentioned M-2 auxilliary carrier wave can not use, or as DPCH carrying non-real time service, when the TS0 of first main carrier went up no BCH, PCH, FACH data, UE just can hop jump handle corresponding non-real time service data to these auxilliary carrier waves.
The second way, S-CCPCH is configured on the TS0 of second main carrier.Because P-CCPCH is configured in respectively on the different carrier waves with S-CCPCH, so S-CCPCH just can be simultaneously together multiplexing with P-CCPCH, and this configuration mode is specially adapted to the bigger situation of cell/sector capacity.The residue carrier processing ability of NodeB/UE can be distributed to auxilliary carrier wave and (comprises M-2 auxilliary carrier wave at most in addition, M can simultaneously treated carrier number for Node B/UE), the TS0 of corresponding auxilliary carrier wave can be configured to DPCH, is equally applicable to real-time service and non-real time service.TS0 on all the other auxilliary carrier waves except above-mentioned M-2 auxilliary carrier wave can not use, or as DPCH carrying non-real time service, when the TS0 of the last no BCH data of the TS0 of first main carrier or second main carrier went up no PCH, FACH data, UE just can hop jump handle corresponding non-real time service data to these auxilliary carrier waves.
Because PICH is used for the bearing call indication information, use with paging channel (PCH) pairing, so suggestion PICH and S-CCPCH are configured on the same carrier wave.
Because the random access procedure of UpPCH, FPACH and PRACH and UE is closely related, therefore advise that UpPCH, FPACH and PRACH are configured on the same carrier wave.
Because Node B/UE has the ability of handling a plurality of carrier waves simultaneously, and the frequency of first main carrier and second main carrier configuration is different, so can on first main carrier, distribute 8 SYNC_UL sign indicating numbers in a certain code character, and on second main carrier, also distribute 8 identical SYNC_UL sign indicating numbers, certainly will be able to improve the probability of success (synchronous detecting probability) that inserts at random like this.After Node B successfully detects the SYNC_UL sign indicating number of UE transmission, then can go up to UE and send acknowledge message at the FPACH of corresponding carriers (first main carrier or second main carrier), UE can go up to Node B at the PRACH of corresponding carriers (first main carrier or second main carrier) and send access information then, last Node B sends to UE with the information of necessity again, and call setup is finished.Just first main carrier and second main carrier have all disposed UpPCH, FPACH and PRACH.
The present invention has overcome the problem based on coverage, power system capacity and the reliability etc. of the TD-SCDMA communication system of multicarrier, provided a kind of public physic channel allocative decision based on multicarrier, system reliability, power system capacity and system effectiveness have been improved, increase cell/section coverage and Cell searching speed, reduced the complexity that UE measures and switch the sub-district.Concrete implement and implementation procedure in employing public physic channel allocative decision of the present invention should to take all factors into consideration coverage, cell/sector capacity and the network planning etc. of multicarrier disposal ability, cell/section of Node B/UE all multifactor.
The present invention is applicable to the TD-SCDMA communication system (1.28McpsLCR TDD) in the 3-G (Generation Three mobile communication system), but be applicable to 3.84Mcps TDD system too and adopt the frequency division multiple access of synchronization CDMA and the system of time division multiple access, any engineer with knowledge background such as signal processing, communications, can design the method and apparatus that corresponding synchronous detects according to the present invention, it all should be included in thought of the present invention and the scope.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (16)
1. the public physic channel distribution method based on multicarrier is characterized in that, comprises the steps:
Zone at the multicarrier covering, to each cell/section, determine that from N the carrier wave that distributes a carrier wave is as first main carrier, determine that the another one carrier wave is as second main carrier, all the other carrier waves are as auxilliary carrier wave, and one of them auxilliary carrier wave is as the auxilliary carrier wave of the backup of first main carrier or second main carrier;
In same cell/section, first main carrier, second main carrier and auxilliary carrier wave use identical scrambler and basic training sequences;
Public physic channel is configured on described first main carrier and/or second main carrier.
2. the public physic channel distribution method based on multicarrier according to claim 1 is characterized in that the configuration step of described public physic channel comprises the steps:
Configuration Primary Common Control Physical Channel P-CCPCH, the data that are used to carry broadcast channel BCH provide the system information broadcast under the replace mode of full sub-district;
Dispose auxiliary publish control physical channel S-CCPCH, be used for the data of bearing call channel PCH and forward access channel FACH;
Configuration rapid physical Random Access Channel FPACH is used for supporting to set up uplink synchronous;
Configures physical Random Access Channel PRACH, the data that are used to carry Random Access Channel RACH;
Configurating downlink pilot channel DwPCH is used for down-going synchronous;
Collocating uplink pilot channel UpPCH is used for uplink synchronous;
Configuration Page Indication Channel PICH is used for the bearing call indication information, uses with paging channel PCH pairing;
Configures physical Uplink Shared Channel PUSCH, the data that are used to carry Uplink Shared Channel USCH; And
Configures physical DSCH Downlink Shared Channel PDSCH is used for the data of bearing downlink shared channel DSCH.
3. the public physic channel distribution method based on multicarrier according to claim 2, it is characterized in that, described Primary Common Control Physical Channel P-CCPCH comprises the first Primary Common Control Physical Channel P-CCPCH1 and the second Primary Common Control Physical Channel P-CCPCH2, and the concrete configuration step is as follows:
Primary Common Control Physical Channel P-CCPCH fixed configurations is to preceding two code channels of the time slot TS0 of first main carrier;
The channel code of the first Primary Common Control Physical Channel P-CCPCH1 and the second Primary Common Control Physical Channel P-CCPCH2 is respectively c
Q=16 (k=1)And c
Q=16 (k=2)
Training sequence is m among the time slot TS0 of first main carrier
(1)And m
(2), this training sequence is assigned to Primary Common Control Physical Channel P-CCPCH to support transmission diversity and beacon function;
Adopt the fixedly spread spectrum mode of spreading factor SF=16;
Full sub-district replace mode is not carried out wave beam forming.
4. the public physic channel distribution method based on multicarrier according to claim 2 is characterized in that, the concrete configuration step of described auxiliary publish control physical channel S-CCPCH is as follows:
Described auxiliary publish control physical channel S-CCPCH is configured on the time slot TS0 of described first main carrier or second main carrier;
Adopt the fixedly spread spectrum mode of spreading factor SF=16;
The code word that described auxiliary publish control physical channel S-CCPCH is adopted is broadcasted in broadcast channel BCH;
Full sub-district replace mode is not carried out wave beam forming.
5. the public physic channel distribution method based on multicarrier according to claim 2, it is characterized in that, described rapid physical Random Access Channel FPACH is as base station node B replying the uplink pilot time slot UpPTS signal of detected user terminal UE, do not carry transmitting channel information, there are not mapping relations with transmission channel, the content of described rapid physical Random Access Channel FPACH comprises synchronous adjustment, power adjustment, be single burst information, the concrete configuration of described rapid physical Random Access Channel FPACH is as follows:
Described rapid physical Random Access Channel FPACH is configured on described first main carrier and/or second main carrier;
Adopt the fixedly spread spectrum mode of spreading factor SF=16;
Spreading code, training sequence and time slot position that described rapid physical Random Access Channel FPACH is adopted are broadcasted by network configuration and in broadcast channel BCH;
Adopt wave beam forming.
6. the public physic channel distribution method based on multicarrier according to claim 2 is characterized in that, described Physical Random Access Channel PRACH concrete configuration is as follows:
Described Physical Random Access Channel PRACH is configured on first main carrier and/or second main carrier;
Spreading factor SF selects SF=16,8,4 one of them spread spectrum modes;
Being configured among the broadcast channel BCH of described Physical Random Access Channel PRACH broadcasted.
7. the public physic channel distribution method based on multicarrier according to claim 2; it is characterized in that; the position of described downlink pilot frequency channel DwPCH is identical with descending pilot frequency time slot DwPTS with content; the burst structure of described downlink pilot frequency channel DwPCH comprises the protection interval of 32 chips and the down-going synchronous SYNC_DL sign indicating number of 64 chips; described down-going synchronous SYNC_DL sign indicating number is one group of PN (pseudo noise) sequence; be used to distinguish neighbor cell, concrete configuration is as follows:
Described downlink pilot frequency channel DwPCH fixed configurations is on first main carrier;
Described down-going synchronous SYNC_DL sign indicating number is spectrum-spreading and scrambling not;
Transmitting power is constant, and is disposed by high level;
Full sub-district replace mode is not carried out wave beam forming.
8. the public physic channel distribution method based on multicarrier according to claim 2; it is characterized in that; the position of described ascending pilot channel UpPCH is identical with uplink pilot time slot UpPTS with content; the burst structure of described ascending pilot channel UpPCH comprises the protection interval of uplink synchronous SYNC_UL sign indicating number and 32 chips of 128 chips; described uplink synchronous SYNC_UL sign indicating number is one group of PN (pseudo noise) sequence; be used for distinguishing different user terminal UE at random access procedure, concrete configuration is as follows:
Described ascending pilot channel UpPCH is configured on first main carrier and/or second main carrier;
Described uplink synchronous SYNC_UL sign indicating number is spectrum-spreading and scrambling not.
9. the public physic channel distribution method based on multicarrier according to claim 2 is characterized in that, described Page Indication Channel PICH concrete configuration is as follows:
Described Page Indication Channel PICH is configured on first main carrier or second main carrier;
Adopt the fixedly spread spectrum mode of spreading factor SF=16.
10. the public physic channel distribution method based on multicarrier according to claim 2 is characterized in that, described Physical Uplink Shared Channel PUSCH concrete configuration is as follows:
Described Physical Uplink Shared Channel PUSCH is configured on first main carrier or second main carrier;
Spreading factor SF selects SF=1,2,4,8,16 one of them spread spectrum modes.
11. the public physic channel distribution method based on multicarrier according to claim 2 is characterized in that, described Physical Downlink Shared Channel PDSCH concrete configuration is as follows:
Described Physical Downlink Shared Channel PDSCH is configured on first main carrier or second main carrier;
Spreading factor SF selects SF=1,16 one of them spread spectrum modes.
12. according to the described public physic channel distribution method of each claim among the claim 2-11 based on multicarrier, it is characterized in that, if during the carrier number N=1 in the cell/section, then only have first main carrier, described public physic channel all is configured on described first main carrier; If N=2 then only exists first main carrier and second main carrier, described public physic channel is configured on described first main carrier and/or second main carrier; If N 〉=3 had then both existed first main carrier, second main carrier, also there is auxilliary carrier wave, described public physic channel is configured on described first main carrier and/or second main carrier.
13. the public physic channel distribution method based on multicarrier according to claim 12, it is characterized in that, if carrier number N 〉=3 in the cell/section then exist first main carrier, second main carrier and auxilliary carrier wave simultaneously, the processing method of wherein said auxilliary carrier wave is as follows:
If N=3, then unique auxilliary carrier wave is as the auxilliary carrier wave of the backup of first main carrier or second main carrier, code channel, time interval resource that the public physic channel that is disposed with first main carrier and second main carrier on the auxilliary carrier wave of described backup is corresponding will keep, and all the other code channels, time interval resource on the auxilliary carrier wave of described backup are used for DPCH; And, when the signal processing channel of first main carrier or the second main carrier correspondence breaks down, then the public physic channel that disposes on first main carrier or second main carrier can successfully be configured to the correspondence position on the auxilliary carrier wave of backup, and the auxilliary carrier wave of described backup will substitute and become first main carrier or second main carrier;
If then there are two or more auxilliary carrier waves in N 〉=4, to assist the carrier wave as backup except that an auxilliary carrier wave, all the other auxilliary carrier waves all are used for DPCH.
14. the public physic channel distribution method based on multicarrier according to claim 12 is characterized in that,
Between different adjacent cell/sectors, dispose the frequency of described first main carrier and second main carrier, make the frequency of first main carrier and second main carrier inequality;
Between different adjacent cell/sectors, the frequency configuration of the auxilliary carrier wave of backup is different;
Same user's multislot services is configured on the same carrier wave;
Same user's uplink and downlink business configuration is on same carrier wave;
Ascending pilot channel UpPCH, rapid physical Random Access Channel FPACH, Physical Random Access Channel PRACH are configured on the same carrier wave, only be configured on described first main carrier, or all configurations on described first main carrier and second main carrier.
15. the public physic channel distribution method based on multicarrier according to claim 12 is characterized in that described auxiliary publish control physical channel S-CCPCH and Page Indication Channel PICH are configured on the same carrier wave.
16. the public physic channel distribution method based on multicarrier according to claim 14, it is characterized in that, when N=1, then described ascending pilot channel UpPCH, rapid physical Random Access Channel FPACH, Physical Random Access Channel PRACH only are configured on described first main carrier; When N 〉=2, there are first main carrier and second main carrier simultaneously, and because first main carrier is different with the frequency of second main carrier configuration, then described ascending pilot channel UpPCH, rapid physical Random Access Channel FPACH, Physical Random Access Channel PRACH only are configured on described first main carrier, or all configurations on described first main carrier and second main carrier.
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| CN101459466B (en) * | 2007-12-12 | 2013-06-05 | 鼎桥通信技术有限公司 | Data transmission method and apparatus |
| CN101494893B (en) * | 2008-01-21 | 2011-06-22 | 中兴通讯股份有限公司 | TD-SCDMA cofrequency networking method based on high speed down data access business |
| CN101600254B (en) * | 2008-06-06 | 2012-03-21 | 华为技术有限公司 | Method, system and equipment for accessing terminal in multiple-frequency point system |
| US8184599B2 (en) * | 2008-06-23 | 2012-05-22 | Qualcomm Incorporated | Management of UE operation in a multi-carrier communication system |
| CN101668247B (en) * | 2008-09-03 | 2012-07-04 | 中兴通讯股份有限公司 | Terminal, base station and information sending method |
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| EP3629664B1 (en) | 2012-09-04 | 2021-07-21 | Electronics and Telecommunications Research Institute | Apparatus and method for channel access |
| CN103051365B (en) * | 2012-12-21 | 2015-07-15 | 大唐移动通信设备有限公司 | Beam shaping method and device |
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| CN107769837B (en) * | 2017-09-22 | 2020-04-10 | 西安空间无线电技术研究所 | Service information transparent forwarding oriented satellite hop wave beam synchronization method |
| JP2021511696A (en) | 2017-12-08 | 2021-05-06 | オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． | Information transmission method, terminal device and network device |
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