Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B7/00—Radio transmission systems, i.e. using radiation field
  • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
  • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
  • H04B7/0413—MIMO systems
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B7/00—Radio transmission systems, i.e. using radiation field
  • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
  • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
  • H04B7/0413—MIMO systems
  • H04B7/0452—Multi-user MIMO systems
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L27/00—Modulated-carrier systems
  • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L27/00—Modulated-carrier systems
  • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
  • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L5/00—Arrangements affording multiple use of the transmission path
  • H04L5/003—Arrangements for allocating sub-channels of the transmission path
  • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W72/00—Local resource management
  • H04W72/20—Control channels or signalling for resource management
  • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
  • Y02D30/00—Reducing energy consumption in communication networks
  • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

• the present invention relates to the field of communications, and in particular, to a method and system for processing a high speed shared control channel signaling. Background technique
• HSDPA High-Speed downlink packet access
• HSPA High-Speed Packet Access
• TD-SCDMA Time Division Synchronized Code Division Multiple Access
• the enhancement and evolution of the standard in the wireless part can significantly improve the transmission rate of downlink data.
• the high-speed shared control channel HS-SCCH High-Speed Shared Control Channel
• TDD Time Division Duplex
• HSDPA is responsible for bearer HS-DSCH (High Speed Downlink Shared Channel, high speed). Downlink shared channel) Control information and scheduling information necessary for channel decoding.
• the NodeB base station
• the NodeB may transmit information of multiple HS-SCCH channels to different groups of terminals. If the HS-SCCH is not determined, the terminal shall listen to information of up to 4 HS-SCCH channels. If the HS-SCCH is determined, the terminal only listens for information on one HS-SCCH channel. For each HS-DSCH TTI (Transmission Time Interval), the HS-SCCH carries the downlink signaling related to the HS-DSCH as shown in Table 1.
• Figure 1 also shows the HS-SCCH coding flow chart in the existing specification TS25.222.
• Table 1 Schematic diagram of the signaling information contained in the HS-SCCH channel of 1.28 Mcps TDD HSDPA Time slot code allocation
• the code channel allocation must be continuous, each time slot (13 bits total, where:
• the assigned code channel is the same
• Equation Modulation method (lbit) 0 QPSK, 1 16-QAM;
• the HARQ process identifies the value range 0 ⁇ 7, that is, the HAP (3bit) parallel process on a transport channel is up to 8; the incremental redundancy version number indicates r, s (whether or not there is self-decoding capability)
• the block error rate is required for BLER
• H-RNTI (16bit) identifies the UE to which the control information belongs
• SS uplink synchronization control word is used to maintain uplink synchronization of HS-SICH;
• the TFRI is a Transport Format Resource Indicator, which is used to indicate the transmission format of the subsequent HS-PDSCH;
• QAM Quadrature Amplitude Modulation
• HARQ is a Hybrid Automatic Repeat reQuest
• HAP is the Handshake Authentication Protocol
• HCSN is the HS-SCCH cyclic sequence number (HS-SCCH cyclic sequence number);
• BLER is the BLock Error Rate
• the H-RNTI is an HS-DSCH channel identifier
• the UE is a User Equipment (User Equipment);
• SS is a synchronization command word (Synchronization Shift);
• HS-SICH is a High-Speed Shared Information Channel;
• the TPC is Transmission Power Control.
• FIG. 1 is a schematic diagram of the coding and multiplexing process of the HS-SCCH in the existing specification TS25.222. As shown in the figure, each step is:
• Multiplexing step multiplexing all signaling information on the HS-SCCH together;
• CRC (Cyclic Redundancy Check) step Add XOR of CRC and UE ID (ie, XOR each bit of CRC and UE ID), using the loop on the transport block The redundancy check is used to perform the error detection function, and at the same time, the UE ID can be used to identify which UE the information on the channel belongs to;
• the Node B when downlink data needs to be sent, the Node B first sends downlink scheduling and control information on the HS-SCCH channel, indicating to the UE that there is HSDPA data on the subsequent HS-PDSCH, and the UE receives the transport block by interpreting the HS-SCCH channel. And using the corresponding HS-SICH channel to feed back ACK/NACK (acknowledgement/non-acknowledgement) information and CQI (Channel Quality Indicator) information to the Node B.
• ACK/NACK acknowledgement/non-acknowledgement
• CQI Channel Quality Indicator
• one high-speed data stream is divided into two parallel low-speed data streams, and then Turbo coding, interleaving, QPSK/16QAM, etc. modulation. Since the two channels of data can use different coding rates and symbol mappings, the number of information bits allocated on each stream is also different.
• Each data stream is subdivided into C sub-streams (C is the maximum number of HS-PDSCHs defined by UE capabilities), and each sub-stream is spread and scrambled and transmitted by multiple antennas.
• the Node B In order to support MIMO dual data stream transmission, it is required to indicate corresponding control signaling information required for receiving dual data stream data on the HS-SCCH channel, mainly including a transmission format and HARQ information.
• the Node B In the MIMO silent data stream transmission, the Node B sends two parallel data to the UE, that is, two data blocks are transmitted in each TTI. Since the spatial channel conditions of each data stream are different, the two channels should be handled. W
• the data stream is separately subjected to AMC (Adaptive Modulation and Coding) to select the respective TBS (Transport Block Size) and modulation mode for the two channels of data, but in the existing HSDPA HS-SCCH channel
• AMC Adaptive Modulation and Coding
• TBS Transport Block Size
• modulation mode signaling bits see Table 1 only indicate the TBS and modulation scheme on a single data stream, ie, it can only support single data stream transmission.
• the two channels of data are transmitted independently, so the HARQ process used by each of them, as well as the retransmission and use of the redundancy version of the data block are also independent of each other, and the existing HSDPAHS-SCCH channel is also Only HARQ-related signaling on a single data stream can be provided, ie it can only support single data stream transmission.
• the HS-SCCH of the TDD system supports only a single data stream in the prior art
• the HS-SCCH of the FDD (Frequency Division Duplex) system can support single data stream and dual data stream, but The total length of the single data stream and the HS-SCCH signaling supporting the dual data stream may vary depending on the amount of information to be carried, and therefore the lengths of the two HS-SCCH signaling are different.
• the present invention provides an HS-SCCH signaling processing method and system, which solves the problem that the UE needs to perform corresponding two-pass decoding in the prior art due to insufficient processing of the HS-SCCH signaling.
• An embodiment of the present invention provides a high-speed shared control channel signaling processing method, including the following steps: Determining a signaling length on the downlink high speed shared control channel HS-SCCH according to control information and scheduling information required for performing multiple input multiple output MIMO dual data stream transmission;
• the HS-SCCH signaling carrying the acquired control information and scheduling information is constructed according to the determined signaling length.
• the method may further comprise encoding the constructed HS-SCCH signaling.
• control information and the scheduling information required to obtain the data stream are specifically: determining whether the data stream in the MIMO transmission is a single data stream or a dual data stream;
• control information and scheduling information required for obtaining the single data stream are determined; when it is a dual data stream, the control information and scheduling information required for each data stream are obtained.
• the embodiment of the present invention further provides a high-speed shared control channel signaling processing system, including: a length determining module, configured to determine, according to control information and scheduling information required for performing MIMO dual data stream transmission, on the HS-SCCH Signaling length
• An obtaining module configured to acquire control information and scheduling information required for the data stream
• the signaling construction module is configured to construct HS-SCCH signaling according to the obtained control information and scheduling information according to the signaling length.
• the system may further comprise an encoding module for encoding the constructed HS-SCCH signaling.
• the acquiring module includes:
• a data stream number determining unit configured to determine whether the data stream in the MIMO transmission is a single data stream or a dual data stream
• the information obtaining unit is configured to acquire control information and scheduling information required for the single data stream when determining that it is a single data stream; and obtain control information and scheduling information required for each data stream when determining that the data stream is a dual data stream.
• the signaling length of the HS-SCCH is first determined according to control information and scheduling information required for the HS-SCCH to perform MIMO dual data stream transmission; After that, whether it is a single data stream transmission or a dual data stream transmission, the HS-SCCH signaling is constructed according to the determined signaling length and the control information and scheduling information required for the current data stream during the current MIMO transmission. That is to say, regardless of whether the data is transmitted by single data stream or double data stream, the constructed signaling length is consistent; then the constructed HS-SCCH signaling with uniform length is encoded and transmitted.
• FIG. 1 is a schematic diagram of a coding and multiplexing process of an HS-SCCH in the existing specification TS 25.222;
• FIG. 2 is a schematic flowchart of an implementation process of the HS-SCCH signaling processing method according to an embodiment of the present invention; Schematic diagram of the structure of the HS-SCCH signaling processing system;
• FIG. 4 is a schematic flowchart of the UE receiving MIMO HS-SCCH signaling according to an embodiment of the present invention. detailed description
• the existing HSDPAHS-SCCH cannot support the MIMO dual data stream transmission, it is necessary to expand and modify the existing control signaling on the channel, such as HARQ related signaling and signaling indicating the transmission format. Expanding, so that the HS-SCCH can provide the UE with control information and scheduling information necessary for receiving the HS-PDSCH channel of the MIMO dual data stream, including TBS and modulation modes respectively selected by the two data streams when performing AMC respectively, and The HARQ process, retransmission indication and redundancy version information used by each of them.
• the indication information indicating the number of data streams can also be designed on the HS-SCCH supporting MIMO, so that the UE can Receive data correctly.
• the existing specification TS25.222 multiplexes all control signaling information on the HSDPA HS-SCCH channel together, and then performs convolutional coding, rate matching, interleaving, And the division and mapping of physical channels, as shown in Figure 1.
• the existing HS-SCCH channel cannot support the MIMO technology in TDD HSPA+, after the signaling of the channel is expanded and modified, a new coding scheme is also required, or based on the existing coding scheme.
• the purpose of the modification is to enable the UE to correctly learn from the channel the number of data streams to be sent by the Node B, the physical resources used, and the control information such as the transport format and HARQ parameters on each data stream.
• MIMO does not always use dual data streams to transmit data.
• the HS-SCCH supporting MIMO is referred to as a MIMO HS-SCCH in the implementation of the present invention, and the signaling information contained therein needs to support both a single data stream and a support. Double data stream.
• MIMO HS-SCCH with single and dual data streams has different channel structure, signaling information sequence length and different coding schemes.
• the existing HSDPA HS-SCCH cannot support the MIMO dual data stream transmission, it is necessary to construct an HS-SCCH capable of carrying control information and scheduling information required for MIMO dual data stream transmission, that is, not only It is necessary to construct an HS-SCCH for a single data stream, and also to construct an HS-SCCH for a dual data stream.
• the HS-SCCH is constructed based only on the control information and scheduling information required for the single data stream and the dual data stream, the total length of the HS-SCCH signaling supporting the single data stream and supporting the dual data stream may be carried as needed.
• the amount of information varies, and different rate matching puncturing patterns are needed, so that the length of the output sequence after these signaling codes can be carried by two SF-16 code channels.
• blind detection can be used at the receiving end. It is distinguished whether the current data stream is supported or the dual data stream is supported. This is because if a single data stream is supported, the puncturing pattern of the single data stream is used for decoding. If the punctured pattern of the dual data stream is used for decoding, the error is inevitable. Therefore, in this scheme, a blind decoding technique is required; in fact, when MIMO is supported in a TDD system, MIMO does not always use dual data streams to transmit data.
• the present invention provides an embodiment that solves this problem.
• the idea of solving the above technical problem in this embodiment is to design the total lengths of the two HS-SCCH signalings supporting the single data stream and the dual data stream to be equal, so that it is not necessary to use blind decoding when decoding the channel, but The unique decoding mode can be used directly; then a signaling in the HS-SCCH is used to indicate whether the channel currently carries single data flow control information or silent data flow control information.
• the present invention provides a HS-SCCH signaling processing method, and a specific embodiment of the method will be described below.
• FIG. 2 is a schematic flowchart of an implementation process of an HS-SCCH signaling processing method according to an embodiment of the present invention. As shown in the figure, when processing HS-SCCH signaling, the following steps may be included:
• Step 201 Determine, according to control information and scheduling information required for performing MIMO dual data stream transmission, an HS-SCCH signaling length.
• Step 202 Determine whether the data flow when the MIMO transmission is performed is a single data flow or a dual data flow.
• Step 203 Determine, when the single data flow is, determine control information and scheduling information required for the single data flow; , determining the control information and scheduling information required for each data stream;
• Step 204 Construct HS-SCCH signaling according to the determined required control information and scheduling information, so that the length of the constructed HS-SCCH signaling is the determined HS-SCCH signaling length.
• step 204 when the length of the HS-SCCH signaling constructed according to the determined required control information and the scheduling information is smaller than the determined signaling length, This is achieved by padding the invalid bits in the HS-SCCH signalling to the determined signalling length.
• the HS-SCCH signaling processing method may further comprise the step of encoding and transmitting the constructed HS-SCCH signaling.
• the signaling length of the HS-SCCH is determined according to the control information and scheduling information required for the HS-SCCH to perform MIMO dual data stream transmission; after determining the length, whether it is a single data stream Transmission or dual data stream transmission, according to the length of the signaling, and then based on the control information and scheduling information required for the current data stream during MIMO transmission HS-SCCH signaling, that is, regardless of whether it is currently transmitted as a single data stream or as a dual data stream, the length of the constructed HS-SCCH signaling is the same; then the constructed HS with uniform length - SCCH signaling is transmitted after encoding; thus, it is no longer necessary to use blind decoding when decoding the channel, but a unique decoding method can be used directly, so that the UE no longer needs to decode twice, which overcomes the low decoding efficiency and increases. Complexity, increase the lack of power consumption of the UE.
• the principle of constructing the HS-SCCH signaling is mainly as follows: It is necessary to ensure that the constructed HS-SCCH signaling length is consistent, and the HS-SCCH signaling is also required to be guaranteed. It carries the control information and scheduling information required for data stream transmission.
• two HS-SCCH signalings supporting single data stream and dual data stream are designed as equal total length.
• sequence lengths of various control information on the HS-SCCH in HSPA+ are given below. Representation:
• Adopt 13bits Same as the existing standard, that is, HS-SCCH in both single-stream and dual-stream formats, 8 bits are used to indicate code channels, and 5 bits are used to indicate time slots;
• 16QAM-16QAM When 64QAM is not supported, there may be 16QAM, QPSK, and no modulation modes on each data stream, that is, the modulation modes existing after combination are: 16QAM-16QAM. QPSK-QPSK, 16QAM-QPSK , QPSK-16QAM, 16QAM-None, QPSK-None, etc.;
• 64QAM When 64QAM is supported, there may be four modulation modes such as 16QAM, 64QAM, QPSK, and no modulation on each data stream.
• the combination mode is the same as that of 64Q AM. Since the modulation mode of 64QAM is added, the lbit is increased accordingly, and 4 bits are used for identification.
• 1 + 1 is a description for easy understanding of the definition in the embodiment. It refers to 1 bit for single data stream and 2 bits for double data stream. That is, one data stream is identified by one bit. When transmitting a single data stream, one bit is used for identification, and the other bit is filled with invalid bits. When transmitting a double data stream, two bits respectively identify one data stream.
• the detection output at the UE side can separate the two data streams, and then the demodulation and decoding process after the detection is Independent of these two data streams. Therefore, in order to support dual data stream transmission of MIMO, the signaling can be set to 2 bits, where each bit is used to indicate the modulation mode on one data stream. If it is a single stream transmission, only lbit is meaningful, and lbit is invalid.
• the specific implicit indication can be as follows:
• the method for the UE to determine the modulation mode is:
• the UE first calculates the physical resource load capacity and the transmission bit rate on the data stream; the transmission bit rate is the RAN (Radio Access Network), the physical resource allocated by the HS-SCCH and the maximum transmittable by the QPSK. Bit rate; The calculation of physical resource load capacity can be performed using channelization code set information and time slot information on the HS-SCCH, which corresponds to the TBS on the HS-SCCH.
• the transmission bit rate is the RAN (Radio Access Network), the physical resource allocated by the HS-SCCH and the maximum transmittable by the QPSK. Bit rate
• the calculation of physical resource load capacity can be performed using channelization code set information and time slot information on the HS-SCCH, which corresponds to the TBS on the HS-SCCH.
• the data stream modulation mode is 64QAM, which is greater than or equal to the transmission bit. At the rate, the data stream modulation mode is QPSK.
• R can be obtained by simulation, and the value ranges from [0, 1].
• the value of R is fixed when the judgment is made, and Choose arbitrarily in the range [0, 1]. That is, although the value range of R is [0, 1], in the implementation, the value is not arbitrarily selected from the range as R, but the value of R is determined in advance by simulation. When the value of R is in the range [0, When 1], judge as described above.
• the physical resource load capacity multiplied by R is equal to the transmission bit rate in the implementation, it is judged as QPSK, that is, the code rate intersection is an open interval for 64QAM, and a closed interval for QPSK. This will be readily understood by those skilled in the art.
• all the modulation mode indication signaling may be omitted to save signaling overhead.
• two switching points between the three modulation modes are first obtained, and the code rates corresponding to the switching points are respectively Cl and C2, where C1 corresponds to the switching point code rate between the QPSK modulation mode and the 16QAM modulation mode, and C2 corresponds to The switching point code rate between the 16QAM modulation mode and the 64QAM modulation mode.
• the corresponding code rate C can be obtained, and a suitable modulation mode can be obtained according to the mapping relationship.
• the code rate C can be obtained according to the resource configuration information of the transport block on the data stream.
• the specific implementation can be:
• the switching point code rate value can be obtained by simulation.
• the above four identification methods can be divided into two categories, which are differentiated according to whether or not 64QAM is supported or not.
• the second, third, and fourth identification methods all support 64QAM, which are one type, and which type depends on the standard.
• device support; second, third, four of these identification methods are selected; for example, support 64QAM modulation mode, and use all omitted methods to implicitly indicate QPSK/16QAM/64QAM three modulation methods.
• the design of the TBS information also carries the number of data streams, for example: 12 bits are used to carry the TBS information, and when the data stream of the MIMO transmission is a single stream, the padding is invalid in 6 bits. Bit 0; Thus, when 6 bits are present on the bit carrying the TBS information and the invalid bit 0 is padded, the number of data streams carried can be determined to be a single data stream.
• Both single data stream and dual data stream use 3 bits, where single data stream indicates 8 processes, and double data stream binds 8 processes on each stream to a total of 8 groups of processes;
• lbit can be added to the HAP information.
• the single data stream and the dual data stream are both 4 bits, where 3 bits indicates 8 processes or 8 groups of processes, and the other 1 bit is used for initial transmission and retransmission flows. In the case of unequal conditions, it is indicated which process on the flow or retransmission on which flow, which increases the flexibility of system scheduling.
• RV Redundancy Version, Redundancy Version
• the RV parameter of each retransmission is not defined in advance, but a label is given to each group of RV parameters, and the signaling indicates the label of the RV parameter.
• the signaling indicates the label of the RV parameter.
• the self-defined expression in the embodiment 2 + 2 means 2 bits for single data stream and 4 bits for double data stream, where every 2 bits indicates the RV of a data stream. It is like the way in TDD HSUPA or FDD.
• the new signaling does not need to be consistent with the existing number of bits, as long as the control information and the scheduling information can be expressed.
• the implementation tries to support dual data stream transmission with fewer bits, but it does not mean that only one of the above embodiments can be implemented as long as the two principles of constructing HS-SCCH signaling can be realized.
• For single data stream transmission and dual data stream transmission it is necessary to ensure that the total number of bits added to the above parts in the HS-SCCH signaling is consistent, and that the HS-SCCH signaling carries the data stream transmission. Required control information and scheduling information. In this way, since the total signaling length of a single data stream is usually shorter than that of the dual data stream, the total signaling length of the single data stream needs to be increased by padding to be the same as the signaling of the dual data stream.
• the specific implementation of the coded transmission process of the constructed HS-SCCH signaling will be described below.
• the encoding step in the implementation may be the same as the existing scheme, but because the signaling length is different, the specific parameters of the steps of encoding code rate and rate matching need to be set according to the signaling length.
• the HS-SCCH coding scheme of 1.28 Mcps TDD HSDPA in the existing specification can be used, that is, all signaling information on the MIMO HS-SCCH channel is multiplexed and unified. Since the total signaling lengths of the single data stream and the dual data stream are the same in the embodiment, only the coding is performed. Need to use a coding rate. See Figure 1 for the implementation steps.
• Multiplexing step multiplexing all control information bits on the MIMO HS-SCCH channel together;
• CRC step adding an exclusive OR of 16-bit UE ID and CRC;
• Channel coding step encoding the output of the CRC step with a 1/3 convolutional code
• Rate matching step the number of punctured bits is about 1/3 of the total number of bits after encoding, so as to be suitable for 2 SF16 code tracks;
• the interleaving step and the physical channel dividing step may be implemented according to an existing scheme.
• Physical channel mapping step After mapping, put it on 2 SF16 code channels.
• the main steps in the coding process are:
• the cyclic redundancy check on the transport block can be used to perform the error detection function, and at the same time, the UE ID can be used to identify which UE the information on the channel belongs to; the channel coding step is used.
• the convolutional code is used to overcome the error in the transmission process; in the rate matching step, the bit sequence of the coded output is appropriately deleted according to the puncturing pattern, so that the bit sequence length after the rate matching is suitable for the allocated physical channel bearer.
• the role of the interleaving step is to overcome sudden errors
• the physical channel segmentation step divides the interleaved sequence into two segments in order to allocate the interleaved sequence to two physical channels;
• the physical channel mapping step maps the output bit stream of the physical channel partition to the corresponding assigned code channel.
• the present invention also provides a high speed shared control channel signaling processing system.
• the specific implementation manner of the system will be described below with reference to the accompanying drawings.
• FIG. 3 is a schematic structural diagram of a high-speed shared control channel signaling processing system according to an embodiment of the present invention. As shown in the figure, the processing system may include:
• a length determining module 301 configured to determine, according to control information and scheduling information required for performing MIMO dual data stream transmission, a signaling length on the HS-SCCH;
• the obtaining module 302 is configured to acquire control information and scheduling information required for the data stream;
• the signaling construction module 303 is configured to construct HS-SCCH signaling according to the acquired control information and scheduling information according to the signaling length.
• processing system may further include an encoding module 304, configured to encode the constructed HS-SCCH signaling.
• the processing system may further include a UE 305, where the UE may include a first determining module, a second determining module, a third determining module, and a fourth determining module, where the determining module is configured to be configured according to corresponding signaling.
• the mode determines the control information and the scheduling information carried by the signaling, and the functions completed by the respective embodiments are further explained in the following embodiments.
• the obtaining module may include:
• a data stream number determining unit configured to determine whether the data stream when the MIMO transmission is performed is a single data stream or a Han data stream
• the information obtaining unit is configured to acquire control information and scheduling information required for the single data stream when determining that it is a single data stream; and obtain control information and scheduling information required for each data stream when determining that the data stream is a dual data stream.
• the signaling construction module may be further configured to: when constructing the HS-SCCH signaling according to the signaling length, when the length of the HS-SCCH signaling constructed according to the determined control information and the scheduling information is smaller than the determined HS-SCCH In the signaling length, the invalid bits are padded to the signaling length in the HS-SCCH signaling.
• the obtaining module may be further configured to obtain required control information and scheduling information including one or a combination of the following information:
• Data stream number information Time slot code channel allocation information, modulation mode information, TBS information, HAP information, RV information, HCSN information, H-RNTI information, new data indication information.
• the signaling construction module may be further configured to: when the control information and the scheduling information required by the data flow include modulation mode information, TBS information, and data flow number information, carry the data flow by using modulation mode information and/or TBS information. Number information.
• the number of data streams carried in the UE may be identified by the first determining module in the UE.
• a first determining module configured to include two data streams in the modulation mode information In the modulation mode, it is determined that the number of data streams carried is a dual data stream; when the modulation mode information includes only one modulation mode of the data stream, it is determined that the number of data streams carried is a single data stream.
• the signaling construction module may be further configured to use the 12 bits to carry the TBS information when the TBS information carries the data flow number information in the HS-SCCH signaling, and when the MIMO transmission data stream is a single data stream, The invalid bits are padded on the 6 bits of the TBS information.
• the number of data streams carried in the UE may be identified by the second determining module in the UE.
• a second determining module configured to: when the invalid bit is filled on the 6 bits of the bit carrying the TBS information, determine that the number of data streams carried is a single data stream; otherwise, determine the carried data stream The number information is a double data stream.
• the signaling construction module may further increase the number of bits in the HS-SCCH signaling to identify the HAP information to indicate that the process on the retransmitted data stream is heavy or heavy when the number of initial and retransmitted data streams is unequal The data stream passed.
• the modulation mode information carried in the UE may be identified by the third determining module or the fourth determining module in the UE.
• a third determining module configured to acquire two switching points between a QPSK modulation mode, a 16QAM modulation mode, and a 64QAM modulation mode of the data stream when the modulation mode is determined by using the modulation mode information, where the corresponding code rate of the switching point is C1 C2, where C1 corresponds to a switching point code rate between a QPSK modulation mode and a 16QAM modulation mode, and C2 corresponds to a switching point code rate between a 16QAM modulation mode and a 64QAM modulation mode;
• the modulation mode corresponding to the data stream is determined to be 16QAM modulation mode; if C ⁇ C2, the modulation mode corresponding to the data stream is determined to be 64QAM modulation mode.
• the corresponding code rate C can be obtained, and the code rate C is compared with the thresholds C1 and C2 to determine the modulation mode.
• a fourth determining module configured to determine, when the modulation mode is determined by using the modulation mode information, that the information carrying the modulation mode is two bits, each bit carries a modulation mode of the data stream; when a certain data stream corresponds to When the bit is 1, the data stream modulation mode for determining the corresponding bit is 16QAM; when the bit is 0, the physical resource load capacity and the transmission bit rate on the data stream corresponding to the bit are obtained, if the physical resource The load capacity multiplied by R is less than the transmission bit rate, and the R range is [0, 1], then the data stream modulation mode corresponding to the bit is 64QAM, if the physical resource load capacity multiplied by R is greater than the transmission bit rate, and the R range is [0, 1], the data stream modulation mode corresponding to
• the UE needs to perform decoding judgment on the MIMO HS-SCCH to obtain the channel decoding of the HS-DSCH.
• the UE receiving the MIMO HS-SCCH at the receiving end can be processed as follows:
• the lengths of the MIMO HS-SCCH signaling bit sequences of the single data stream and the dual data stream are the same, so that only rate matching is performed.
• There is a puncturing pattern so it is not necessary to use blind decoding, but one decoding, obtaining all signaling information, and also making the UE no longer need to decode two times, which overcomes the disadvantages of low decoding efficiency, increased complexity, and increased power consumption of the UE.
• the TBS may be used for determining, for example, if 6 bits is all 0s, it indicates that the HS-SCCH signaling of the single data stream is It is the HS-SCCH signaling of the dual data stream; or, the modulation mode information is used for the judgment, for example, the first identification mode and the second identification mode include two single data streams and two data streams, which can be Know the number of data streams.
• the modulation mode information is used for the judgment, for example, the first identification mode and the second identification mode include two single data streams and two data streams, which can be Know the number of data streams.
• other downlink signaling can be obtained, that is, the corresponding signaling information is obtained from the valid bits of other signaling parts.
• FIG. 4 is a schematic flowchart of a UE receiving MIMO HS-SCCH signaling. According to the above description, as shown in the figure, when a UE receives MIMO HS-SCCH signaling, the following steps may be implemented:
• Step 401 The UE receives the MIMO HS-SCCH signaling and decodes the signal.
• Step 402 it is determined whether the decoding is correct, if yes, go to step 403, otherwise go to step 406;
• Step 403, perform UE ID detection, determine whether it belongs to the UE, if yes, go to step 404, otherwise go to step 406;
• Step 404 Obtain data flow number information according to TBS information or modulation mode information.
• Step 405 Obtain corresponding control information and scheduling information from valid bits of other signaling according to the data flow number information.
• Step 406 Abandon the received data.
• the total signaling length supporting the single data stream and the total signaling length supporting the dual data stream are set to be the same, and the receiving is performed.
• the terminal decodes the control channel, only one decoding is needed to obtain the data stream number information and other control information.
• the single data stream signaling may be performed by filling the invalid data bits for the signaling of the single data stream.
• the total length is the same as the total length of the signaling of the dual data stream;
• the number of data streams can be implicitly learned, and other signaling information can be obtained according to the number of data streams.
• the signaling that can implicitly indicate the number of data streams may be TBS signaling or modulation mode signaling.
• an implicit design may be used, for example, the signaling is completely removed, and the code rate switching point between each modulation mode is determined by using a pre-simulation; or partially implicit The information is indicated, that is, lbit is used for each data stream, and the code rate switching point between some of the modulation modes is determined in combination with the pre-simulation.
• the blind detection is not required in the embodiment of the present invention, and only the receiving end needs to decode once; no new signaling is needed to indicate the number of data streams. Instead, it is implicitly known by signaling such as TBS or modulation; Less UE receives decoding effort. This enables better support for MIMO technology in HSPA+, increasing data transfer rates and system throughput.
• the spirit and scope of the invention Thus, it is intended that the present invention cover the modifications and the modifications of the invention

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• 2008
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