CN101848525A - Method and system for sending control information based on expanded control signal channel - Google Patents
Method and system for sending control information based on expanded control signal channel Download PDFInfo
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Abstract
The invention discloses a method for sending control information based on expanded control signal channels, which comprises the following steps that: a frame structure of down-link shared control channels (HS-SCCH) is expanded; and a base station obtains the current transmission mode, selects the frame structure of the expanded HS-SCCH corresponding to the current transmission mode, and sends the HS-SCCH control information. The invention also discloses a system for sending control information based on the expanded control channels. An expansion unit in the system is used for expanding the frame structure of the HS-SCCH, a sending unit is used for the base station to obtain the current transmission mode, select the frame structure of the expanded HS-SCCH corresponding to the current transmission mode, and send the HS-SCCH control information. When the method and the system of the invention are adopted, the requirement of sending the control information under multi-current multi-input and multi-output mode can be met, and in addition, the requirements under the non-multi-input and multi-output mode and the double-current multi-input and multi-output mode of single user are compatible.
Description
Technical field
The present invention relates to TD SDMA (TD-SCDMA) system, relate in particular to and support in a kind of TD-SCDMA system under single user and multi-user's multiple-input and multiple-output (MIMO) pattern, the method and system that send control information based on the expansion of descending shared control signal channel (HS-SCCH) frame structure.
Background technology
Along with development of wireless communication devices, introduced the MIMO technology, the MIMO technology comprises double-current multiple-input and multiple-output (SU-MIMO) technology and multithread multiple-input and multiple-output (MU-MIMO) technology.Wherein, the SU-MIMO technology is the popular research field of wireless communication field in recent years, it is characterised in that transmitting set and receiver all introduced many antennas, with respect to the traditional single output of single input (SISO) system, the SU-MIMO system is by space diversity reception to communicate or space multiplexing technique, greatly elevator system capacity.The MU-MIMO technology is to utilize the space segmentation between different user to constitute different channels, makes the multiplexing identical physical resource of the user with spatial separation, thereby reaches the purpose that improves the cordless communication network capacity.
Under the non-MIMO pattern, according to 3GPP agreement TS25.222, as shown in Figure 1, the composition of existing HS-SCCH frame structure comprises: the channel code set identifier (CCS) of 8 bits, the time slot position information (TS) of 5 bits, the modulation system information (MF) of 1 bit, the transport block size information of 6 bits (TBS), the automatic request retransmission process identification (PID) of the mixing of 3 bits (HARQ), the redundancy version information of 3 bits (RV), the new data block indication (NDI) of 1 bit, the cyclic sequence sign (HSCN) of 3 bits amounts to 30bits; Also comprise cyclic redundancy check information (CRC), CRC contains user terminal (UE) sign, UE sign and CRC state have the binding of 16bits, the information of the composition of frame structure amounts to 46bits so, it is 16 down physical channel that follow-up simultaneous bias (SS) and transmitting power control (TPC) control bit 176 bits altogether through additional 4 bits after 1/3 convolutional encoding and the rate-matched, HS-SCCH are mapped to two spreading factors (SF).
The MIMO pattern comprises SU-MIMO pattern and MU-MIMO pattern, wherein, under the SU-MIMO pattern, during user's stream transmission, need carry out main flow and the auxilliary transfer of data that flows simultaneously.Owing to increased the transmission of a data stream information,, need expand existing HS-SCCH shown in Figure 1, to satisfy the needs of stream transmission under the SU-MIMO pattern so need to increase the indication of auxilliary streaming data stream information.Though application number is 200810127348.1 Chinese patent, provided the expansion scheme of HS-SCCH frame structure under the SU-MIMO pattern,, this scheme just is adapted to single user's SU-MIMO condition.
Under the MU-MIMO pattern, the multiplexing identical physical code channel resource of MU-MIMO system different user needs to adopt different middle trained sequence code (Mid-amble) code words and the corresponding relation of spreading code.Under existing user's acquiescence mode, the Mid-amble code word is the relation of one group K corresponding 16 spreading codes of Mid-amble code word with spreading code; And owing to support the doubly empty timesharing of N under the MU-MIMO system, promptly support under N the multiplexing identical physical code channel resource situation of user, Mid-amble code word and corresponding relation between the spreading code then expand to the relation of 16 spreading codes of K the corresponding N group of Mid-amble code word, that is to say, the corresponding one group of corresponding relation of each empty branch user, therefore, need existing HS-SCCH shown in Figure 1 is expanded, to satisfy the needs that send control signaling under the MU-MIMO pattern, and consider compatibility, the frame structure of expansion back HS-SCCH also needs the needs that send control information under the compatible non-MIMO pattern of energy and single user's the SU-MIMO pattern except satisfying the needs that send control signaling under the MU-MIMO pattern.Yet, in the design of present HS-SCCH frame structure, all do not relate to the expansion design of the HS-SCCH frame structure that satisfies above-mentioned needs.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and system that send control information based on the control channel of expansion, frame structure based on expansion back HS-SCCH sends control information, can satisfy the needs that send control signaling under the MU-MIMO pattern, and the needs that send control information under the compatible non-MIMO pattern of energy and single user's the SU-MIMO pattern.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that sends control information based on the control channel of expansion, this method comprises: the frame structure to descending shared control signal channel HS-SCCH is expanded; The base station obtains current transmission means, selects and the corresponding frame structure of expanding back HS-SCCH of described current transmission means, sends the HS-SCCH control information;
Wherein, the transmission means that the frame structure of described expansion back HS-SCCH is supported comprises: the transmission means of pure single current, the transmission means of multithread multiple-input and multiple-output MU-MIMO single current, the transmission means of double-current multiple-input and multiple-output SU-MIMO double fluid and the transmission means of MU-MIMO double fluid.
Wherein, when under the multiple-input and multiple-output MIMO pattern during single-stream transmission, the type of described transmission means comprises: the transmission means of the transmission means of pure single current and MU-MIMO single current; The type of the frame structure of described expansion back HS-SCCH comprises: the transport-type of the transport-type of pure single current and MU-MIMO single current;
The composition of the frame structure of described expansion back HS-SCCH comprises: the first channel code set identifier CCS1, time slot position information TS, the first modulation system information MF1, the first transport block size information TBS1, the automatic request retransmission process identification (PID) HARQ of mixing, the second modulation system information MF2, the second transport block size information TBS2, the first redundancy version information RV1, second channel sign indicating number set identifier CCS2, flag bit information FLAG, cyclic sequence sign HCSN, UE sign; And described UE sign bundlees mutually with the CRC state.
Wherein, the type of the transmission means of described MU-MIMO single current comprises: support the empty branch of two users, support the empty transmission means of dividing and supporting the empty branch in four-function family of three users;
Described CCS1 is specially: for channelization code set information and middle trained sequence code Mid-amble code character that the user distributes are distributed identifying information; CCS2 is specially: to the identification information that user's sky divides multiple to identify, the described empty multiple that divides comprises: twice is empty divides, three times of empty branches and four times of empty branches.
Wherein, also comprise after the described transmission HS-SCCH control information: the user terminal UE of MIMO pattern receives the process of described HS-SCCH control information and demodulation, specifically may further comprise the steps:
A11, when judging that according to the field information of UE sign described HS-SCCH control information is the information of current UE, read the field information of TBS1 and the field information of TBS2;
A12, when there is all-zero state in the field information of the field information of TBS1 and TBS2, determine that the composition structure that current HS-SCCH control information is adopted is: the frame structure of HS-SCCH after the expansion of being adopted during single-stream transmission under the MIMO pattern.
Wherein, also comprise behind the described A12:
B11, read the field information of FLAG, when the field information of FLAG is 0, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of pure single current;
B12, according to the frame structure of HS-SCCH after the described current expansion of adopting, read other field informations in the frame structure.
Wherein, also comprise behind the described A12:
C11, read the field information of FLAG, when the field information of FLAG is 1, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of MU-MIMO single current.
Wherein, also comprise behind the described C11:
D11, read the field information of CCS2, when the field information of CCS2 is 00, determine currently emptyly to divide multiple to be that twice is empty to divide;
D12, read the field information of CCS1, be retrieved as the channelization code set information that the user distributes;
D13, judge that according to the CRC state user's sky divides user number, judge whether described CRC state is normal, if then the active user be empty branch user 1, the Mid-amble code character of distribution is first group, changes execution in step D14 over to; Otherwise the active user is the empty user 2 of branch, and the Mid-amble code character of distribution is second group, changes execution in step D14 over to;
D14, according to the frame structure of HS-SCCH after the described current expansion of adopting, read other field informations in the frame structure.
Wherein, also comprise behind the described C11:
E11, read the field information of CCS2, when the field information of CCS2 is 01, determine that the current empty multiple that divides is three times of empty branches;
E12, read the field information of CCS1, according to the 1st, 2 bit information in the described field information, the sky that obtains the active user divides user number; Wherein, described empty branch user number is 00 o'clock, the empty branch of sign user 1; Described empty branch user number is 01 o'clock, the empty branch of sign user 2; Described empty branch user number is 10 o'clock, the empty branch of sign user 3;
E13, according to the 3rd, 4 bit information in the described field information, be retrieved as the channelization code set information that the user distributes;
E14, according to the frame structure of HS-SCCH after the described current expansion of adopting, read other field informations in the frame structure.
Wherein, also comprise behind the described C11:
F11, read the field information of CCS2, when the field information of CCS2 is 10, determine that the current empty multiple that divides is four times of empty branches;
F12, read the field information of CCS1, according to the 1st, 2 bit information in the described field information, the sky that obtains the active user divides user number; Wherein, described empty branch user number is 00 o'clock, the empty branch of sign user 1; Described empty branch user number is 01 o'clock, the empty branch of sign user 2; Described empty branch user number is 10 o'clock, the empty branch of sign user 3; Described empty branch user number is 11 o'clock, the empty branch of sign user 4;
F13, according to the 3rd, 4 bit information in the described field information, be retrieved as the channelization code set information that the user distributes;
F14, according to the frame structure of HS-SCCH after the described current expansion of adopting, read other field informations in the frame structure.
Wherein, when under the MIMO pattern during stream transmission, the type of described transmission means comprises: the transmission means of the transmission means of SU-MIMO double fluid and MU-MIMO double fluid; The type of the frame structure of described expansion back HS-SCCH comprises: the transport-type of the transport-type of SU-MIMO double fluid and MU-MIMO double fluid;
The composition of the frame structure of described expansion back HS-SCCH comprises: CCS1, TS, MF1, TBS1, HARQ, MF2, TBS2, RV1, RV2, FLAG, HCSN, UE sign; And described UE sign bundlees mutually with the CRC state.
Wherein, described CCS1 is specially: be the channelization code set information of user's distribution; Also comprise after the described transmission HS-SCCH control information: the UE of MIMO pattern receives the process of described HS-SCCH control information and demodulation, specifically may further comprise the steps:
A21, when judging that according to the field information of UE sign described HS-SCCH control information is the information of current UE, read the field information of TBS1 and the field information of TBS2;
A22, when there is the non-full zero state in the field information of the field information of TBS1 and TBS2, determine that the composition structure that current HS-SCCH control information is adopted is: the frame structure of HS-SCCH after the expansion of being adopted during stream transmission under the MIMO pattern.
Wherein, also comprise behind the described A22:
B21, read the field information of FLAG, when the field information of FLAG is 0, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of SU-MIMO double fluid;
B22, according to the frame structure of HS-SCCH after the described current expansion of adopting, read other field informations in the frame structure.
Wherein, also comprise behind the described A22:
C21, read the field information of FLAG, when the field information of FLAG is 1, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of MU-MIMO double fluid;
C22, read the field information of CCS1, be retrieved as the channelization code set information that the user distributes;
C23, judge that according to the CRC state user's sky divides user number, judge whether described CRC state is normal, if then the active user be empty branch user 1, the Mid-amble code character of distribution is first group, changes execution in step C24 over to; Otherwise the active user is the empty user 2 of branch, and the Mid-amble code character of distribution is second group, changes execution in step C24 over to;
C24, according to the frame structure of HS-SCCH after the described current expansion of adopting, read other field informations in the frame structure.
A kind of system that sends control information based on the control channel of expansion, this system comprises: expanding element and transmitting element; Wherein,
Expanding element is used for the frame structure of HS-SCCH is expanded;
Transmitting element is used for the base station and obtains current transmission means, selects and the corresponding frame structure of expanding back HS-SCCH of described current transmission means, sends the HS-SCCH control information.
Wherein, this system also comprises: receive and demodulating unit, be used for UE and receive described HS-SCCH control information and demodulation.
Wherein, described reception and demodulating unit, be further used for reading the field information of TBS1 and the field information of TBS2 is an all-zero state, determine that the composition structure that current HS-SCCH control information is adopted is: the frame structure of HS-SCCH after the expansion of being adopted during single-stream transmission under the MIMO pattern, carry out demodulation at the field information in the described frame structure.
Wherein, described reception and demodulating unit, be further used for reading the field information of TBS1 and the field information of TBS2 is the non-full zero state, determine that the composition structure that current HS-SCCH control information is adopted is: the frame structure of HS-SCCH after the expansion of being adopted during stream transmission under the MIMO pattern, carry out demodulation at the field information in the described frame structure.
The present invention expands the frame structure of HS-SCCH; The base station obtains current transmission means, selects and the corresponding frame structure of expanding back HS-SCCH of current transmission means, sends the HS-SCCH control information.
Wherein, the transmission means that the frame structure of HS-SCCH is supported after this expansion comprises: the transmission means of pure single current, the transmission means of MU-MIMO single current, the transmission means of the transmission means of SU-MIMO double fluid and MU-MIMO double fluid.
The present invention expands existing HS-SCCH shown in Figure 1, expansion based on the HS-SCCH frame structure sends control information, can not only satisfy the needs that send control signaling under the MU-MIMO pattern, and the needs that send control information under the compatible non-MIMO pattern of energy and single user's the SU-MIMO pattern.
Description of drawings
Fig. 1 is the composition schematic diagram of existing HS-SCCH frame structure;
Fig. 2 is the realization flow schematic diagram of the inventive method;
Fig. 3 is the composition schematic diagram of expansion back HS-SCCH frame structure during single-stream transmission under the MIMO pattern of the present invention;
Fig. 4 is two times of empty composition schematic diagrames of refined structure down that divide among Fig. 3;
Fig. 5 is three times of empty composition schematic diagrames of refined structure down that divide among Fig. 3;
Fig. 6 is four times of empty composition schematic diagrames of refined structure down that divide among Fig. 3;
Fig. 7 is the composition schematic diagram of expansion back HS-SCCH frame structure during stream transmission under the MIMO pattern of the present invention.
Embodiment
Basic thought of the present invention is: the frame structure to HS-SCCH is expanded; The base station obtains current transmission means, selects and the corresponding frame structure of expanding back HS-SCCH of current transmission means, sends the HS-SCCH control information.
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme.
As shown in Figure 2, a kind of method that sends control information based on the control channel of expansion may further comprise the steps:
Here, the transmission means that the frame structure of HS-SCCH is supported after this expansion comprises: the transmission means of pure single current, the transmission means of MU-MIMO single current, the transmission means of the transmission means of SU-MIMO double fluid and MU-MIMO double fluid.
At the technical scheme that is made of step 101～step 102, it comprises two kinds at expansion and situations about sending, and below two kinds of situations is set forth respectively.
First kind at expansion and situation about sending: when under the MIMO pattern during single-stream transmission, the type of transmission means comprises: the transmission means of the transmission means of pure single current and MU-MIMO single current, the type of the frame structure of this expansion back HS-SCCH comprises so: the transport-type of the transport-type of pure single current and MU-MIMO single current.Should expand the composition of the frame structure of back HS-SCCH, the composition of the frame structure of this expansion back HS-SCCH comprises: the first channel code set identifier (CCS1), TS, the first modulation system information (MF1), first transport block size information (TBS1), HARQ, the second modulation system information (MF2), second transport block size information (TBS2), first redundancy version information (RV1), second channel sign indicating number set identifier (CCS2), flag bit information (FLAG), HCSN, UE sign; And the UE sign bundlees mutually with the CRC state.
Further, the type of the transmission means of MU-MIMO single current comprises: support the empty branch of two users, support the empty transmission means of dividing and supporting the empty branch in four-function family of three users.CCS1 is specially: for channelization code set information and Mid-amble code character that the user distributes are distributed identifying information; CCS2 is specially: to the identification information that user's sky divides multiple to identify, the empty multiple that divides comprises: twice is empty divides, three times of empty branches and four times of empty branches.During owing to single-stream transmission under the MIMO pattern, in the frame structure of this expansion back HS-SCCH, the Mid-amble code character that increases the empty user of branch correspondence is distributed identifying information, thereby, support the doubly empty timesharing of N in the MU-MIMO system, the control signaling that can know current expansion transmission based on this HS-SCCH frame structure is: the empty user 1 of branch divides the control signaling of which the empty user of the branch correspondence among the user N to sky, to satisfy the empty needs that divide of user under the MU-MIMO pattern.
Composition at the frame structure of HS-SCCH after this expansion specifically illustrates as follows:
As shown in Figure 3, during single-stream transmission, the frame structure of expansion back HS-SCCH is represented with TYPE2-A under the MIMO pattern.Here, single-stream transmission comprises under the MIMO pattern: the transmission means of the transmission means of pure single current and MU-MIMO single current.Below TYPE2-A is specifically addressed.
5 bit TS in a1, the existing HS-SCCH frame structure, 1 bit MF, 6 bit TBS, 3 or 4 bit HARQ, the bit length of 3 bit HCSN and information implication remain unchanged, wherein existing MF and existing TBS are used to characterize main transmission block information in MIMO double-stream mode of the present invention, be the MF1 of 1 bit and the TBS1 of 6 bits.
8 bit CCS in a2, the existing HS-SCCH frame structure are compressed to 4 bits in TYPE2-A, be designated as CCS1.
A3, the information that increase by 2 bit identification sky divides multiple in TYPE2-A, promptly the Mid-amble code character is distributed identifying information promptly, is designated as CCS2.
3 bit RV in a4, the existing HS-SCCH frame structure are compressed to 2 bit identification in TYPE2-A, be designated as RV1.
1 bit NDI in a5, the existing HS-SCCH frame structure is removed in TYPE2-A.
A6, increase the FLAG of 1 bit in TYPE2-A, FLAG=0 is designated pure single-stream transmission state, the single-stream transmission state of FLAG=1 sign MU-MIMO.
A7, in TYPE2-A, increase the modulation system information of 1 bit, be used for characterizing auxilliary transmission block or flow 2 indication, be designated as MF2.Wherein, at stream 2, stream 2 refers to main transmission block; Stream 2 with characterize just saying different of auxilliary transmission block contrast, main and auxiliary transmission block also can be to say to be to flow 1 or flow 2.
A8, increase the transport block size information of 6 bits, be used for characterizing auxilliary transmission block or flow 2 indication, be designated as TBS2.
A9, FLAG are 0, identify pure single-stream transmission state, then form CCS (xccs, 1xccs by CCS1 and CCS2,2xccs, 3xccs, 4xccs, 5xccs, 6) channelization code set information, code channel minimum particle size are the code channel of 2 SF=16, when XXXXXX=111000 represents SF=1.
FLAG is 1, sign MU-MIMO single-stream transmission state, [CCS1 CCS2] is 6 bits, also needing further to distinguish is that the twice sky divides, three times of empty branches or four times of empty branches, and the corresponding empty user number that divides is the Mid-amble code group information that the user distributes, differentiation in such a way:
CCS2 (xccs2,1xccs2,2) is 2 bits, is used for identifying the empty multiple that divides, and is: the empty branch of 00-sign twice; Three times of empty branches of 01-sign; Four times of empty branches of 10-sign; 11-reserves.
As shown in Figure 4, the twice sky is divided into: CCS1CCS2=[xxxx00], then 4 bits of CCS1 are used for the channelization code set information of identifying user, and the code channel minimum particle size is the code channel of 4 SF=16, when XXXX=1100 represents SF=1; And identify the empty user number that divides according to the CRC state, and CRC normally be the empty user 1 of branch, CRC polarity inversion be sky branch user 2.And CCS2 (xccs2,1xccs2,2) is 2 bits, is used for identifying the empty multiple that divides, and is: the empty branch of 00-sign twice.
As shown in Figure 5, three times of skies are divided into: CCS1CCS2=[xxxx01], wherein the 1st of CCS1 the, 2 bits are (TypeUe=xccs, 1xccs, 2), the sky that is used for identifying the active user divides user number, is the empty user 1 of branch of 00-sign; The empty branch of 01-sign user 2; The empty branch of 10-sign user 3; 11-reserves; The remaining bits of CCS1 is xccs, 3xccs, and 4, be used for the channelization code set information of identifying user, the code channel minimum particle size is the code channel of 8 SF=16, when XX=10 represents SF=1.And CCS2 (xccs2,1xccs2,2) is 2 bits, is used for identifying the empty multiple that divides, and is: three times of empty branches of 01-sign.
As shown in Figure 6, four times of skies are divided into: CCS1CCS2=[xxxx10], wherein the 1st of CCS1 the, 2 bits are (xccs, 1xccs, 2), the sky that is used for identifying the active user divides user number, is: the 00-sign is empty divides user 1; The empty branch of 01-sign user 2; The empty branch of 10-sign user 3; The empty branch of 11-sign user 4; The remaining bits of CCS1 is (xccs, 3xccs, 4), is used for the channelization code set information of identifying user, and the code channel minimum particle size is the code channel of 8 SF=16, when XX=10 represents SF=1.And CCS2 (xccs2,1xccs2,2) is 2 bits, is used for identifying the empty multiple that divides, and is: four times of empty branches of 10-sign.
Under first kind of situation at expansion and transmission, also comprise after the transmission HS-SCCH control information of step 102: UE receives the process of HS-SCCH control information and demodulation, and the UE here refers to the user terminal under the MIMO pattern, and this process specifically may further comprise the steps:
Step 111, when judging that according to the field information of UE sign the HS-SCCH control information is the information of current UE, read the field information of TBS1 and the field information of TBS2.
Step 112, when there is all-zero state in the field information of the field information of TBS1 and TBS2, determine that the composition structure that current HS-SCCH control information is adopted is: the frame structure of HS-SCCH after the expansion of being adopted during single-stream transmission under the MIMO pattern, to finish demodulation at the field information in the frame structure.
Here, also comprise two kinds of different handling processes after the step 112, first kind of handling process comprises:
Step 211, read the field information of FLAG, when the field information of FLAG is 0, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of pure single current.
Step 212, according to the frame structure of HS-SCCH after the current expansion of adopting, read other field informations in the frame structure.
Second kind of handling process comprises three kinds of situations, and first kind of situation may further comprise the steps:
Step 311, read the field information of FLAG, when the field information of FLAG is 1, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of MU-MIMO single current.
Step 312, read the field information of CCS2, when the field information of CCS2 is 00, determine currently emptyly to divide multiple to be that twice is empty to divide.
Step 313, read the field information of CCS1, be retrieved as the channelization code set information that the user distributes.
Step 314, judge that according to the CRC state user's sky divides user number, judge whether the CRC state is normal, if then the active user be sky branch user 1, the Mid-amble code character of distribution is first group, changes execution in step 315 over to; Otherwise the active user is the empty user 2 of branch, and the Mid-amble code character of distribution is second group, changes execution in step 315 over to.
Step 315, according to the frame structure of HS-SCCH after the current expansion of adopting, read other field informations in the frame structure.
Second kind of situation may further comprise the steps:
Step 411, read the field information of FLAG, when the field information of FLAG is 1, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of MU-MIMO single current.
Step 412, read the field information of CCS2, when the field information of CCS2 is 01, determine that the current empty multiple that divides is three times of empty branches.
Step 413, read the field information of CCS1, according to the 1st, 2 bit information in the field information of CCS1, the sky that obtains the active user divides user number.Wherein, empty branch user number is 00 o'clock, the empty branch of sign user 1; Empty branch user number is 01 o'clock, the empty branch of sign user 2; Empty branch user number is 10 o'clock, the empty branch of sign user 3.
Step 414, according to the 3rd, 4 bit information in the field information of CCS1, be retrieved as the channelization code set information that the user distributes.
Step 415, according to the frame structure of HS-SCCH after the current expansion of adopting, read other field informations in the frame structure.
The third situation may further comprise the steps:
Step 511, read the field information of FLAG, when the field information of FLAG is 1, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of MU-MIMO single current.
Step 512, read the field information of CCS2, when the field information of CCS2 is 10, determine that the current empty multiple that divides is four times of empty branches.
Step 513, read the field information of CCS1, according to the 1st, 2 bit information in the field information of CCS1, the sky that obtains the active user divides user number.Wherein, empty branch user number is 00 o'clock, the empty branch of sign user 1; Empty branch user number is 01 o'clock, the empty branch of sign user 2; Empty branch user number is 10 o'clock, the empty branch of sign user 3; Empty branch user number is 11 o'clock, the empty branch of sign user 4.
Step 514, according to the 3rd, 4 bit information in the field information of CCS1, be retrieved as the channelization code set information that the user distributes.
Step 515, according to the frame structure of HS-SCCH after the current expansion of adopting, read other field informations in the frame structure.
Second kind at expansion and situation about sending: when under the MIMO pattern during stream transmission, the type of transmission means comprises: the transmission means of the transmission means of SU-MIMO double fluid and MU-MIMO double fluid, the type of the frame structure of expansion back HS-SCCH comprises so: the transport-type of the transport-type of SU-MIMO double fluid and MU-MIMO double fluid.Should expand the composition of the frame structure of back HS-SCCH, the composition of the frame structure of this expansion back HS-SCCH comprises: CCS1, TS, MF1, TBS1, HARQ, MF2, TBS2, RV1, RV2, FLAG, HCSN, UE sign; And the UE sign bundlees mutually with the CRC state.Wherein, CCS1 is specially: be the Mid-amble code character channelization code set information of user's distribution.
Composition at the frame structure of HS-SCCH after this expansion specifically illustrates as follows:
As shown in Figure 7, during stream transmission, the frame structure of expansion back HS-SCCH is represented with TYPE2-B under the MIMO pattern.Here, stream transmission comprises under the MIMO pattern: the transmission means of the transmission means of SU-MIMO double fluid and MU-MIMO double fluid.Below TYPE2-B is specifically addressed.
5 bit TS in b1, the existing HS-SCCH frame structure, 1 bit MF, 6 bit TBS, 3 or 4 bit HARQ, the position of 3 bit HS-SCCH, bit length and information implication remain unchanged.Wherein existing MF and existing TBS are used to characterize main transmission block information in MIMO double-stream mode of the present invention, be the MF1 of 1 bit and the TBS1 of 6 bits.
The RV of 3 bits in b2, the existing HS-SCCH frame structure and the NDI of 1 bit be totally 4 bits, is used for characterizing the RV version of the main and auxiliary transmission block of MIMO double-stream mode in TYPE2-B of the present invention.Wherein, preceding two bits are used to characterize main piece RV information, are designated as RV1, and latter two bit is used to characterize auxilliary piece RV information, is designated as RV2.
8 bit CCS in b3, the existing HS-SCCH frame structure are compressed to 4 bits in TYPE2-B, be designated as CCS1.
B4, increase the FLAG of 1 bit in TYPE2-B, FLAG=0 is designated SU-MIMO stream transmission state, the stream transmission state of FLAG=1 sign MU-MIMO.
B5, in TYPE2-B, increase the modulation system information of 1 bit, be used for characterizing auxilliary transmission block or flow 2 indication, be designated as MF2.
B6, in TYPE2-B, increase the transport block size information of 6 bits, be used for characterizing auxilliary transmission block or flow 2 indication, be designated as TBS2.
Under second kind of situation at expansion and transmission, also comprise after the transmission HS-SCCH control information of step 102: UE receives the process of HS-SCCH control information and demodulation, and the UE here refers to the user terminal under the MIMO pattern, and this process specifically may further comprise the steps:
Step 121, when judging that according to the field information of UE sign the HS-SCCH control information is the information of current UE, read the field information of TBS1 and the field information of TBS2.
Step 122, when there is the non-full zero state in the field information of the field information of TBS1 and TBS2, determine that the composition structure that current HS-SCCH control information is adopted is: the frame structure of HS-SCCH after the expansion of being adopted during stream transmission under the MIMO pattern, to finish demodulation at the field information in the frame structure.
Here, also comprise two kinds of different handling processes after the step 122, first kind of handling process comprises:
Step 221, read the field information of FLAG, when the field information of FLAG is 0, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of SU-MIMO double fluid.
Step 222, according to the frame structure of HS-SCCH after the current expansion of adopting, read other field informations in the frame structure.
Second kind of handling process comprises:
Step 321, read the field information of FLAG, when the field information of FLAG is 1, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of MU-MIMO double fluid.
Step 322, read the field information of CCS1, be retrieved as the channelization code set information that the user distributes.
Step 323, judge that according to the CRC state user's sky divides user number, judge whether the CRC state is normal, if then the active user be sky branch user 1, the Mid-amble code character of distribution is first group, changes execution in step step 324 over to; Otherwise the active user is the empty user 2 of branch, and the Mid-amble code character of distribution is second group, changes execution in step step 324 over to.
Step 324, according to the frame structure of HS-SCCH after the current expansion of adopting, read other field informations in the frame structure.
In sum, content of the present invention comprises: one, still to keep adopting two SF be 16 descending code channel to the frame structure of expansion back HS-SCCH, and still multiplexing SS and TPC 4 bit synchronous power control information.Two, under the non-MIMO pattern, existing HS-SCCH frame structure remains unchanged, as shown in Figure 1.Three, the frame structure of expansion back HS-SCCH is divided into two kinds of different types under the MIMO pattern.Wherein, first kind is TYPE2-A, as shown in Figure 3; And single-stream transmission comprises under the MIMO pattern: pure single-stream transmission and the HS-SCCH channel architecture type that can support the empty MU-MIMO single-stream transmission of dividing in two users, three users and four-function family.Second kind is TYPE2-B, as shown in Figure 7; And stream transmission comprises under the MIMO pattern: the HS-SCCH channel architecture type of SU-MIMO stream transmission and MU-MIMO stream transmission.
It is pointed out that the transmission of adopting the present invention can support the HS-SCCH control information of SU-MIMO and two to four times of empty MU-MIMO that divide under the MIMO pattern, can also support the coexistence of SU-MIMO and MU-MIMO.
For the UE that does not support the MIMO function in the network, base station side sends the HS-SCCH control information according to existing HS-SCCH frame structure, and end side is carried out demodulation by existing mode.For the UE that supports the MIMO function in the network, when base station side downlink physical shared channel (HS-PDSCH) carries out pure single current and the transmission of MU-MIMO single-stream mode, adopt the TYPE2-A emission HS-SCCH control information of HS-SCCH; When base station side HS-PDSCH carries out stream transmission, then adopt the TYPE2-B emission HS-SCCH control information of HS-SCCH.End side judges that according to the field information of TBS1 and TBS2 HS-SCCH channel architecture type is TYPE2-A or TYPE2-B, and carries out corresponding demodulation.
Method embodiment is: the base station sends the HS-SCCH control information to the UE that supports MIMO, and demodulation is carried out in this HS-SCCH control information that end-on is received.Among this method embodiment,, specifically may further comprise the steps at transmission:
Step 131, base station judge that according to corresponding dispatching algorithm and decision rule the transmission means that current scheduling user is fit to is pure single-stream transmission, MU-MIMO single-stream transmission, SU-MIMO stream transmission or MU-MIMO stream transmission on HS-PDSCH, when if HS-PDSCH is pure single-stream transmission or MU-MIMO single-stream transmission, then execution in step 132, if, when HS-PDSCH was SU-MIMO stream transmission or MU-MIMO stream transmission, then execution in step 133.
Here, according to corresponding dispatching algorithm and decision rule judge can for: adopt existing adaptive algorithm to judge according to channel quality.
Step 132, base station selected HS-SCCH channel architecture type are TYPE2-A, send the HS-SCCH control information based on TYPE2-A.
Step 133, base station selected HS-SCCH channel architecture type are TYPE2-A, send the HS-SCCH control information based on TYPE2-B.
Among this method embodiment,, specifically may further comprise the steps at demodulation:
Step 601, UE monitor all HS-SCCH and demodulation are carried out in the HS-SCCH control information that receives.
Step 602, judge whether to be this user profile according to corresponding UE sign, definite then continue execution in step 603, otherwise skip to execution in step 625.
Step 603, be defined as this user profile after, read corresponding TBS1 and TBS2 field information.
Step 604, judge whether TBS1, TBS2 field information exist all-zero state, if, determine that then HS-SCCH channel architecture type is TYPE2-A, promptly the user carries out single-stream transmission, continues execution in step 605; Otherwise, skip to execution in step 618.
Step 605, read FLAG, judge whether FLAG is 0, if determine that then HS-SCCH channel architecture type is a pure single-stream transmission type under the TYPE2-A, and skip to execution in step 617; Otherwise, continue execution in step 606.
Step 606, the FLAG that reads are 1 o'clock, determine that HS-SCCH channel architecture type is a single-stream transmission type under the MU-MIMO under the TYPE2-A.
Step 607, read the CCS2 field information, judge whether to be 00, if then determining current be the empty branch state of twice, continuation execution in step 608; Otherwise, skip to execution in step 611.
Step 608, read the CCS1 field information, be retrieved as the channelization code set information that the user distributes.
Step 609, judge that according to the CRC state user's sky divides user number, whether the CRC state is normal, if then the active user be the empty user 1 of branch, promptly the Mid-amble code character of Fen Peiing is first group, and skips to execution in step 617, otherwise continuation execution in step 610.
Step 610, CRC polarity inversion, then the active user is the empty user 2 of branch, promptly the Mid-amble code character of Fen Peiing is second group, skips to execution in step 617.
Step 611, judge that whether the CCS2 field satisfies 01,, and continue execution in step 612 if then determining current is three times of empty branch states; Otherwise skip to execution in step 614.
Step 612, read the 1st among the CCS1,2 bit information, the sky that obtains the active user divides user number, and wherein 00-is designated the empty user 1 of branch, and 01-is designated the empty user 2 of branch, and 10-is designated the empty user 3 of branch.
Step 613, read the 3rd among the CCS1,4 bit information, be retrieved as the channelization code set information that the user distributes, skip to execution in step 617.
Step 614, judge that whether the CCS2 field satisfies 10,, and continue execution in step 615 if then determining current is four times of empty branch states; Otherwise skip to execution in step 625.
Step 615, read the 1st among the CCS1,2 bit information, the sky that obtains the active user divides user number, and wherein 00-is designated the empty user 1 of branch, and 01-is designated the empty user 2 of branch, and 10-is designated the empty user 3 of branch, and 11-sign position is empty divides a user 4.
Step 616, read the 3rd among the CCS1,4 bit information, be retrieved as the channelization code set information that the user distributes.
Step 617, read other corresponding relevant field information, and skip to execution in step 624 according to the TYPE2-A structure type.
Step 618, HS-SCCH channel architecture type are TYPE2-B, and promptly the user carries out stream transmission.
Step 619, read FLAG, judge whether FLAG is 0, if determine that then HS-SCCH channel architecture type is a SU-MIMO stream transmission type under the TYPE2-B, and skip to execution in step 623; Otherwise, continue execution in step 620.
Step 620, read FLAG=1 the time, determine that HS-SCCH channel architecture type is a MU-MIMO transport-type under the TYPE2-B.
Step 621, judge that according to the CRC state user's sky divides user number, whether the CRC state is normal, if then the active user be empty branch user 1, promptly the Mid-amble code character of Fen Peiing is first group, and skips to execution in step 623; Otherwise continue execution in step 622.
Step 622, CRC polarity inversion, then the active user is the empty user 2 of branch, promptly the Mid-amble code character of Fen Peiing is second group.
Step 623, read other corresponding relevant field information according to the TYPE2-B structure type.
Step 624, HS-SCCH control information demodulation finish.
Step 625, differentiation make mistakes and abandon relevant information, and UE continues to monitor the HS-SCCH channel.
A kind of system that sends control information based on the control channel of expansion, this system comprises: expanding element and transmitting element.Wherein, expanding element is used for the frame structure of HS-SCCH is expanded.Transmitting element is used for the base station and obtains current transmission means, selects and the corresponding frame structure of expanding back HS-SCCH of current transmission means, sends the HS-SCCH control information.
Here, this system also comprises: receive and demodulating unit, be used for UE and receive HS-SCCH control information and demodulation.
Here, receive and demodulating unit, be further used for reading the field information of TBS1 and the field information of TBS2 is an all-zero state, determine that the composition structure that current HS-SCCH control information is adopted is: the frame structure of HS-SCCH after the expansion of being adopted during single-stream transmission under the MIMO pattern, carry out demodulation at the field information in this frame structure.
Here, receive and demodulating unit, be further used for reading the field information of TBS1 and the field information of TBS2 is the non-full zero state, determine that the composition structure that current HS-SCCH control information is adopted is: the frame structure of HS-SCCH after the expansion of being adopted during stream transmission under the MIMO pattern, carry out demodulation at the field information in this frame structure.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (17)
1. method of sending control information of control channel based on expansion, it is characterized in that this method comprises: the frame structure to descending shared control signal channel HS-SCCH is expanded; The base station obtains current transmission means, selects and the corresponding frame structure of expanding back HS-SCCH of described current transmission means, sends the HS-SCCH control information;
Wherein, the transmission means that the frame structure of described expansion back HS-SCCH is supported comprises: the transmission means of pure single current, the transmission means of multithread multiple-input and multiple-output MU-MIMO single current, the transmission means of double-current multiple-input and multiple-output SU-MIMO double fluid and the transmission means of MU-MIMO double fluid.
2. method according to claim 1 is characterized in that, when under the multiple-input and multiple-output MIMO pattern during single-stream transmission, the type of described transmission means comprises: the transmission means of the transmission means of pure single current and MU-MIMO single current; The type of the frame structure of described expansion back HS-SCCH comprises: the transport-type of the transport-type of pure single current and MU-MIMO single current;
The composition of the frame structure of described expansion back HS-SCCH comprises: the first channel code set identifier CCS1, time slot position information TS, the first modulation system information MF1, the first transport block size information TBS1, the automatic request retransmission process identification (PID) HARQ of mixing, the second modulation system information MF2, the second transport block size information TBS2, the first redundancy version information RV1, second channel sign indicating number set identifier CCS2, flag bit information FLAG, cyclic sequence sign HCSN, UE sign; And described UE sign bundlees mutually with the CRC state.
3. method according to claim 2 is characterized in that, the type of the transmission means of described MU-MIMO single current comprises: support the empty branch of two users, support the empty transmission means of dividing and supporting the empty branch in four-function family of three users;
Described CCS1 is specially: for channelization code set information and middle trained sequence code Mid-amble code character that the user distributes are distributed identifying information; CCS2 is specially: to the identification information that user's sky divides multiple to identify, the described empty multiple that divides comprises: twice is empty divides, three times of empty branches and four times of empty branches.
4. method according to claim 3 is characterized in that, also comprise after the described transmission HS-SCCH control information: the user terminal UE of MIMO pattern receives the process of described HS-SCCH control information and demodulation, specifically may further comprise the steps:
A11, when judging that according to the field information of UE sign described HS-SCCH control information is the information of current UE, read the field information of TBS1 and the field information of TBS2;
A12, when there is all-zero state in the field information of the field information of TBS1 and TBS2, determine that the composition structure that current HS-SCCH control information is adopted is: the frame structure of HS-SCCH after the expansion of being adopted during single-stream transmission under the MIMO pattern.
5. method according to claim 4 is characterized in that, also comprises behind the described A12:
B11, read the field information of FLAG, when the field information of FLAG is 0, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of pure single current;
B12, according to the frame structure of HS-SCCH after the described current expansion of adopting, read other field informations in the frame structure.
6. method according to claim 4 is characterized in that, also comprises behind the described A12:
C11, read the field information of FLAG, when the field information of FLAG is 1, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of MU-MIMO single current.
7. method according to claim 6 is characterized in that, also comprises behind the described C11:
D11, read the field information of CCS2, when the field information of CCS2 is 00, determine currently emptyly to divide multiple to be that twice is empty to divide;
D12, read the field information of CCS1, be retrieved as the channelization code set information that the user distributes;
D13, judge that according to the CRC state user's sky divides user number, judge whether described CRC state is normal, if then the active user be empty branch user 1, the Mid-amble code character of distribution is first group, changes execution in step D14 over to; Otherwise the active user is the empty user 2 of branch, and the Mid-amble code character of distribution is second group, changes execution in step D14 over to;
D14, according to the frame structure of HS-SCCH after the described current expansion of adopting, read other field informations in the frame structure.
8. method according to claim 6 is characterized in that, also comprises behind the described C11:
E11, read the field information of CCS2, when the field information of CCS2 is 01, determine that the current empty multiple that divides is three times of empty branches;
E12, read the field information of CCS1, according to the 1st, 2 bit information in the described field information, the sky that obtains the active user divides user number; Wherein, described empty branch user number is 00 o'clock, the empty branch of sign user 1; Described empty branch user number is 01 o'clock, the empty branch of sign user 2; Described empty branch user number is 10 o'clock, the empty branch of sign user 3;
E13, according to the 3rd, 4 bit information in the described field information, be retrieved as the channelization code set information that the user distributes;
E14, according to the frame structure of HS-SCCH after the described current expansion of adopting, read other field informations in the frame structure.
9. method according to claim 6 is characterized in that, also comprises behind the described C11:
F11, read the field information of CCS2, when the field information of CCS2 is 10, determine that the current empty multiple that divides is four times of empty branches;
F12, read the field information of CCS1, according to the 1st, 2 bit information in the described field information, the sky that obtains the active user divides user number; Wherein, described empty branch user number is 00 o'clock, the empty branch of sign user 1; Described empty branch user number is 01 o'clock, the empty branch of sign user 2; Described empty branch user number is 10 o'clock, the empty branch of sign user 3; Described empty branch user number is 11 o'clock, the empty branch of sign user 4;
F13, according to the 3rd, 4 bit information in the described field information, be retrieved as the channelization code set information that the user distributes;
F14, according to the frame structure of HS-SCCH after the described current expansion of adopting, read other field informations in the frame structure.
10. method according to claim 1 is characterized in that, when under the MIMO pattern during stream transmission, the type of described transmission means comprises: the transmission means of the transmission means of SU-MIMO double fluid and MU-MIMO double fluid; The type of the frame structure of described expansion back HS-SCCH comprises: the transport-type of the transport-type of SU-MIMO double fluid and MU-MIMO double fluid;
The composition of the frame structure of described expansion back HS-SCCH comprises: CCS1, TS, MF1, TBS1, HARQ, MF2, TBS2, RV1, RV2, FLAG, HCSN, UE sign; And described UE sign bundlees mutually with the CRC state.
11. method according to claim 10 is characterized in that, described CCS1 is specially: be the channelization code set information of user's distribution; Also comprise after the described transmission HS-SCCH control information: the UE of MIMO pattern receives the process of described HS-SCCH control information and demodulation, specifically may further comprise the steps:
A21, when judging that according to the field information of UE sign described HS-SCCH control information is the information of current UE, read the field information of TBS1 and the field information of TBS2;
A22, when there is the non-full zero state in the field information of the field information of TBS1 and TBS2, determine that the composition structure that current HS-SCCH control information is adopted is: the frame structure of HS-SCCH after the expansion of being adopted during stream transmission under the MIMO pattern.
12. method according to claim 11 is characterized in that, also comprises behind the described A22:
B21, read the field information of FLAG, when the field information of FLAG is 0, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of SU-MIMO double fluid;
B22, according to the frame structure of HS-SCCH after the described current expansion of adopting, read other field informations in the frame structure.
13. method according to claim 11 is characterized in that, also comprises behind the described A22:
C21, read the field information of FLAG, when the field information of FLAG is 1, determine that the type of the frame structure of HS-SCCH after the current expansion of adopting is: the transport-type of MU-MIMO double fluid;
C22, read the field information of CCS1, be retrieved as the channelization code set information that the user distributes;
C23, judge that according to the CRC state user's sky divides user number, judge whether described CRC state is normal, if then the active user be empty branch user 1, the Mid-amble code character of distribution is first group, changes execution in step C24 over to; Otherwise the active user is the empty user 2 of branch, and the Mid-amble code character of distribution is second group, changes execution in step C24 over to;
C24, according to the frame structure of HS-SCCH after the described current expansion of adopting, read other field informations in the frame structure.
14. a system that sends control information based on the control channel of expansion is characterized in that this system comprises: expanding element and transmitting element; Wherein,
Expanding element is used for the frame structure of HS-SCCH is expanded;
Transmitting element is used for the base station and obtains current transmission means, selects and the corresponding frame structure of expanding back HS-SCCH of described current transmission means, sends the HS-SCCH control information.
15. system according to claim 14 is characterized in that, this system also comprises: receive and demodulating unit, be used for UE and receive described HS-SCCH control information and demodulation.
16. system according to claim 15, it is characterized in that, described reception and demodulating unit, be further used for reading the field information of TBS1 and the field information of TBS2 is an all-zero state, determine that the composition structure that current HS-SCCH control information is adopted is: the frame structure of HS-SCCH after the expansion of being adopted during single-stream transmission under the MIMO pattern, carry out demodulation at the field information in the described frame structure.
17. system according to claim 15, it is characterized in that, described reception and demodulating unit, be further used for reading the field information of TBS1 and the field information of TBS2 is the non-full zero state, determine that the composition structure that current HS-SCCH control information is adopted is: the frame structure of HS-SCCH after the expansion of being adopted during stream transmission under the MIMO pattern, carry out demodulation at the field information in the described frame structure.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011038631A1 (en) * | 2009-09-30 | 2011-04-07 | 中兴通讯股份有限公司 | Transmission method, transmitting and receiving devices for high speed shared control channel information |
| CN102036303B (en) * | 2009-09-30 | 2015-05-20 | 中兴通讯股份有限公司 | High-speed shared control channel (HS-SCCH) information transmission method, transmitting device and receiving device |
| CN102684821A (en) * | 2011-03-16 | 2012-09-19 | 鼎桥通信技术有限公司 | Transmission method and transmission system of multi-carrier high speed downlink packet access (HSDPA), base station and user equipment |
| CN102684821B (en) * | 2011-03-16 | 2015-04-29 | 鼎桥通信技术有限公司 | Transmission method and transmission system of multi-carrier high speed downlink packet access (HSDPA), base station and user equipment |
| CN103476131A (en) * | 2012-06-08 | 2013-12-25 | 中兴通讯股份有限公司 | Collision avoidance method under CELL_FACH state, base station and terminal thereof |
| CN103476131B (en) * | 2012-06-08 | 2017-10-27 | 中兴通讯股份有限公司 | Method for collision avoidance, base station and terminal under CELL_FACH states |
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