KR101291292B1 - Signaling process method and system for high-speed shared control channel - Google Patents

Abstract

The present invention provides a method and system for processing a high speed shared control channel signaling. The method includes: determining a signaling length on a fast shared control channel based on control information and dispatch information required for performing a multi-input multiple-output double data stream transmission; Obtaining control information and dispatch information required by the data stream; And establishing a fast shared control channel signaling based on the control information and the dispatch information obtained according to the determined signaling length.

Description

SIGNALING PROCESS METHOD AND SYSTEM FOR HIGH-SPEED SHARED CONTROL CHANNEL}

TECHNICAL FIELD The present invention relates to the field of communication technologies, and more particularly, to a method and system for processing high speed shared control channel signaling.

High-speed downlink packet access (HSDPA) technology during High-Speed Packet Access (HSPA) is a time division synchronized code division multiple access (TD-SCDMA) system for 3GPP organizations. As one of the 3G network standards defined by the enhancements and evolution of the wireless part of the standard, the transmission speed of downlink data has been significantly improved. Newly increased high speed shared control channel (HS-SCCH) during Time division duplex (TDD) HSDPA is HS-DSCH (High Speed Downlink Shared Channel). Responsible for loading control information and dispatch information for channel decoding, one HS-SCCH channel occupies two downlink SF = 16 code channels, and also occupies both time slot formats # 5 and # 0. Quadrature Phase Shift Keying (QPSK) modulation is employed. NodeB (base station) can transmit the information of several HS-SCCH channels to different groups of terminals. If the HS-SCCH is not determined, the terminal has the largest number of four HS-SCCH channels. If the HS-SCCH is confirmed, the UE monitors information of only one HS-SCCH channel. For each HS-DSCH Transmission Time Interval (TTI), the HS-SCCH carries downlink signaling as shown in Table 1 associated with the HS-DSCH. Figure 1 also shows the HS-SCCH coding flow diagram in the existing code TS25.222.

Abbreviation of signaling information included in HS-SCCH channel of 1.28Mcps TDD HSDPA


TFRI (indicating the transmission format of the subsequent HS-PDSCH) Slot code channel distribution (all 13 bits, of which 8 bits are used to indicate code channels and 5 bits are used to indicate slots) The distribution of code channels is necessarily continuous and the code channels distributed in each slot are equally declared to start = 15, stop = 0 with SF = 1 and in other cases start <stop. Modulation method (1 bit) 0-QPSK, 1-16-QAM; Transport block size (6bits) Index value





HARQ Information HARQ process identification HAP (3bit) Value range 0-7, i.e. the largest number of parallel processes on one transport channel, eight Incremental duplicate version number (3bit) r, s (own own decoding capability)
b (influences bit reordering of 16QAM-) New data indication (1bit) Indicate whether the data is new or resent HCSN (3bit) It is necessary to statistics the block error rate BLER of HS-SCCH during the power control process.
H-RNTI (16bit) Mark the UE to which the control information belongs
SS Uplink Synchronization Control Word Used to maintain uplink synchronization of HS-SICH
TPC Control Words for Uplink Power Control Closed-loop power control of the HS-SICH

Among them, the English abbreviations have the following meanings, respectively.

TFRI is a transport format resource indicator used to indicate a transport format of a subsequent HS-PDSCH;

QAM includes Quadrature Amplitude Modulation;

HARQ is a hybrid automatic repeat reQuest (Hybrid Automatic Repeat reQuest);

HAP includes Handshake Authentication Protocol;

HCSN includes HS-SCCH cyclic sequence number;

BLER is the Block Error Rate;

H-RNTI is HS-DSCH channel marker;

UE includes User Equipment;

SS is Synchronization Shift;

HS-SICH includes a High-Speed Shared Information Channel;

TPC is called Transmission Power Control.

1 is a schematic diagram of coding and multiplexing flow of HS-SCCH in the existing standard TS25.222. As shown in the drawings, each procedure is:

Multiplexing procedure: multiplex all signaling information on the HS-SCCH together;

Cyclic Redundancy Check (CRC) procedure: Uses a cyclic redundancy check on a transport block by applying an exclusive OR of the CRC and the UE ID (i.e., performing an exclusive OR operation on every bit of the CRC and every bit of the UE ID). Perform an error detection function and simultaneously indicate which UE belongs to the information on this channel through the UE ID;

Then, the channel coding procedure for sequentially coding the channel, the rate matching procedure, the interleaving procedure, the physical channel partitioning procedure for distributing the interleaved sequence on the two physical channels, and the output bit stream divided by the physical channel Perform a physical channel mapping procedure for mapping on the corresponding code channel.

As can be seen from this, when there is downlink data to be transmitted, Node B first transmits downlink dispatch and control information on the HS-SCCH channel and indicates to the UE that HSDPA data is present on the subsequent HS-PDSCH. The UE receives the transport block by analyzing the HS-SCCH channel, and uses the corresponding HS-SICH channel to transmit ACK / NACK (confirmation / non-confirmation) information and CQI (Channel Quality Indicator) to Node B. Feedback the information.

In the TDD HSPA + system, when performing MIMO (Multiple Input Multiple Output) double data stream transmission, the high speed data stream splits into parallel low speed data streams and modulates Turbo coding, interleaving, QPSK / 16QAM, etc. Go through. Since bi-data streams can use different coding rates and sign mappings, the number of information bits distributed on each stream is also different. Each data stream is further divided into C substreams (C is the maximum number of HS-PDSCHs defined by UE capability), and each substream is again spread through spectral spreading and scrambling and then fired through a multi-antenna.

In order to support MIMO double data stream launch, the corresponding control signaling information required to receive the double data stream data on the HS-SCCH channel should be indicated and mainly include a transmission format and HARQ information. When transmitting a MIMO double data stream, Node B sends two parallel data to the UE, that is, two data blocks within each TTI, and the spatial channel conditions experienced by each data stream are different, so AMC (Adaptive Modulation and Coding) is required to select each transport block size (TBS) and modulation method for two data streams, but TBS in the existing HSDPA HS-SCCH channel The signaling bits of the and modulation schemes (see Table 1) indicate only the TBS and modulation schemes on a single data stream, i.e. only for the transmission of a single data stream. In addition, since the two data streams are transmitted independently of each other, the HARQ process and the data block retransmission and redundant version information used by each are independent of each other, but the existing HSDPA HS-SCCH channel is associated with HARQ on a single data stream. Only signaling can be provided, ie only a single data stream transmission is supported.

Although the HS-SCCH of the TDD standard system supports only a single data stream in the prior art, the HS-SCCH of a frequency division duplex (FDD) standard system can support a single data stream and a double data stream. The two HS-SCCH signaling lengths are different because the total length of HS-SCCH signaling of the and double data streams varies with the amount of information to be carried.

When the two HS-SCCH signaling lengths are different and there is no clear data stream number indication information, the receiver should use blind decoding to distinguish whether it supports single data stream or double data stream. If it is supported, it should be decoded using the puncturing pattern of a single data stream, and if it is decoded using the puncturing pattern of a double data stream, an error will inevitably appear. Therefore, this method requires the use of blind decoding technology means, and the shortcomings of this method are as follows. In other words, since HS-SCCH signaling has various shortcomings in processing, UE needs to decode twice correspondingly under blind decoding processing method, which reduces decoding efficiency, increases complexity, and consumes electrical energy consumed by UE. To increase.

The present invention provides a method and system for processing HS-SCCH signaling to solve the problem that the UE has to decode twice accordingly due to the lack of existing in the processing of HS-SCCH signaling in the prior art.

An embodiment of the present invention provides a method for processing a fast shared control channel signaling.

Determining a signaling length on the downlink high speed shared control channel HS-SCCH based on control information and dispatch information required for multi-input multiple-output MIMO double data stream transmission;

Obtaining control information and dispatch information required by the data stream;

And building the HS-SCCH signaling carrying control information and dispatch information acquired according to the determined signaling length.

Preferably the method further comprises a procedure of proceeding with coding for the constructed HS-SCCH signaling.

Preferably, the procedure for acquiring control information and dispatch information required by the data stream is specifically

Determine whether the data stream during MIMO transmission is a single data stream or a double data stream;

Acquire control information and dispatch information required by the single data stream when determining that the data stream is a single data stream; When determining that the data stream is a double data stream, control information and dispatch information required for each data stream are acquired.

An embodiment of the present invention also provides a high speed shared control channel signaling processing system.

A length determination module for determining a signaling length on the HS-SCCH based on control information and dispatch information required to perform MIMO double data stream transmission;

An acquisition module for acquiring control information and dispatch information required by the data stream;

And a signaling establishment module for constructing HS-SCCH signaling based on the control information and the dispatch information obtained according to the signaling length.

Preferably the system further comprises a coding module for coding the constructed HS-SCCH signaling.

Preferably the acquisition module is

Data stream number determination means for deciding whether the data stream during MIMO transmission is a single data stream or a double data stream;

Acquire control information and dispatch information required by the single data stream when determining that the data stream is a single data stream; And information acquisition means for acquiring control information and dispatch information required for each data stream when determining that the data stream is a double data stream.

Advantageous effects of the embodiments of the present invention are as follows.

In the embodiment of the present invention, the HS-SCCH first determines the signaling length of the HS-SCCH based on the control information and dispatch information required for transmitting the MIMO double data stream, and after the signaling length is determined, whether the HS-SCCH is a single data stream or not. Regardless of whether it is a double data stream or not, the HS-SCCH signaling is established based on the control information and dispatch information required for the MIMO transmission. Regardless of whether it is transmitted in a double data stream or in a double data stream, the length of signaling after construction is consistent and then coded and transmitted for the constructed, unified length of HS-SCCH signaling. Therefore, in the implementation of the present invention, when the channel is decoded, there is no need to use blind decoding directly. Instead, the UE does not need to perform decoding twice, and thus the decoding efficiency decreases and the complexity increases. Overcoming shortcomings that increase the electrical energy consumed by the UE has been overcome.

1 is a flow diagram of coding and multiplexing of the HS-SCCH in the existing norm TS25.222;
2 is an implementation flow diagram of the HS-SCCH signaling processing method in the embodiment of the present invention;
3 is a structural diagram of the HS-SCCH signaling processing system in the embodiment of the present invention;
4 is a flow diagram in which the UE receives MIMO HS-SCCH signaling in an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

Since the existing HSDPA HS-SCCH cannot support MIMO double data stream transmission, it is necessary to extend and modify the existing control signaling on this channel. For example, both HARQ-related signaling and signaling indicating transmission format are extended. It is necessary to enable HS-SCCH to provide control information and dispatch information for providing the HS-PDSCH channel for receiving MIMO double data streams to the UE. It includes the TBS and modulation scheme selected as they proceed, the HARQ process they use, retransmission indications, and duplicate version information. In addition, the MIMO operation mode selects whether to use a single data stream transmission or a double data stream transmission based on the superiority of the channel condition. Therefore, by designing indication information indicating the number of data streams on the HS-SCCH supporting MIMO, Allow the UE to receive data correctly.

On the other hand, in the coding scheme, multiplexing together all the control signaling information on the HSDPA HS-SCCH channel in the existing code TS25.222, and then splitting convolutional coding, rate matching, interleaving and physical channel as shown in FIG. Proceed with the mapping. However, since the existing HS-SCCH channel cannot support the MIMO technology of TDD HSPA +, it is necessary to extend and modify the signaling of this channel and then use the new coding scheme or modify based on the existing coding scheme. It is necessary and the purpose is to allow the UE to correctly obtain control information such as the number of data streams to be transmitted by the Node B from the channel, the physical resources used, and the transmission format and HARQ parameters on each data stream.

Further, when the TDD system needs to support MIMO's HS-SCCH structure and coding scheme, MIMO does not always use double data streams to launch data, but to ensure data transmission quality when channel conditions are poor. If the stream needs to be switched and fired and the channel conditions are relatively good, then it must be switched to the double data stream and fired. Therefore, for convenience of description in terms of the structure of the MIMO HS-SCCH, the HS-SCCH supporting MIMO among the embodiments of the present invention is referred to as the MIMO HS-SCCH, and the signaling information included therein must support a single data stream and double data. It must also be able to support streams. However, MIMO HS-SCCH of single and double data streams have different channel structures, signaling information sequence lengths and different coding schemes.

Further, since the existing HSDPA HS-SCCH cannot support MIMO double data stream transmission, it is necessary to construct HS-SCCH that can be carried in the control information and dispatch information required for MIMO double data stream transmission. In addition to constructing the HS-SCCH for the data stream, there is also a need to construct the HS-SCCH for the double data stream. However, if the HS-SCCH is constructed based only on the control and dispatch information required by the single data stream and the double data stream, the HS-SCCH signaling total length supporting the single data stream and the HS-SCCH signaling supporting the double data stream Since the total length varies with the amount of information to be carried, the puncturing pattern is matched using different rates so that the output sequence length after coding of such signaling can be loaded by two SF = 16 code channels. In this case, blind detection can be used to distinguish whether the receiver supports a single data stream or a double data stream. This is because if the single data stream is supported, it must be decoded using the puncturing pattern of the single data stream, and if it is decoded using the puncturing pattern of the double data stream, an error will inevitably occur. Should be used. In reality, when supporting MIMO in TDD system, MIMO does not always use double data stream to fire data, but when channel condition is bad, it has to switch to single data stream and fire to ensure data transmission quality. When better, switch back to the double data stream and fire. In other words, the switching between the single data stream and the double data stream is self-adaptive depending on the channel conditions, so under the blind decoding process the UE has to perform the decoding twice accordingly. This lowers the decoding efficiency, increases the complexity and increases the electrical energy consumed by the UE.

Based on the above analysis, the present invention provides an implementation manner which solves the above-mentioned problem. In this embodiment, the idea of solving the above technical problem is as described below. In other words, the total length of two HS-SCCH signaling supporting the single data stream and the double data stream is designed to be the same, and there is no need to use blind decoding to decode the channel, and then use the unique decoding method directly. Based on the signaling of any one of the SCCHs, it indicates whether this channel carries single data stream control information or double data stream control information.

Thus, the present invention provides a method for processing HS-SCCH signaling, which will be described below in detail.

FIG. 2 is a flow diagram for implementing the HS-SCCH signaling method according to the embodiment of the present invention and may include the following procedure when performing processing for HS-SCCH signaling as shown in the figure. In other words

Procedure201. Determining the HS-SCCH signaling length based on control information and dispatch information required for performing MIMO double data stream transmission;

Procedure202. Determining whether the data stream in MIMO transmission is a single data stream or a double data stream;

Procedure203. Determining control information and dispatch information required by the single data stream when determined to be a single data stream; Determining control information and dispatch information required for each data stream when it is determined as a double data stream;

Procedure204. Based on the required required control information and dispatch information, the HS-SCCH signaling is established and the length of the constructed HS-SCCH signaling becomes the determined HS-SCCH signaling length.

The process of constructing the HS-SCCH signaling based on the determined signaling length in step 204 is performed when the HS-SCCH signaling length constructed based on the required required control information and the dispatch information is smaller than the determined signaling length. This can be achieved by filling an invalid bit position up to a determined signaling length.

Preferably, after constructing HS-SCCH signaling, the method for processing HS-SCCH signaling further includes a procedure of coding and then building the constructed HS-SCCH signaling.

In this embodiment, first, in step 201, the signaling length of the HS-SCCH is determined based on the control information and the dispatch information required for the transmission of the MIMO double data stream, and after this length is determined, the single data stream is transmitted. HS-SCCH signaling is established based on this signaling length regardless of whether it is a double data stream transmission or a control information and dispatch information required by the data stream when MIMO transmission is performed. In other words, the length of HS-SCCH signaling after construction is consistent and is coded for the constructed, unified length of HS-SCCH signaling regardless of whether it is transmitted as a single data stream or as a double data stream. do. Therefore, when decoding this channel, there is no need to use blind decoding directly, instead of using blind decoding, so that the UE does not need to decode twice, the decoding efficiency decreases, the complexity increases, and the electrical energy consumed by the UE Overcoming increased shortcomings.

The following describes a specific implementation method for constructing HS-SCCH signaling. The principle of constructing HS-SCCH signaling not only ensures that the HS-SCCH signaling lengths after construction are identical, but also ensures that the data streams are present during HS-SCCH signaling. It should be ensured to carry the control information and dispatch information required to proceed with the transmission.

In 1.28Mcps TDD HSPA +, it is necessary to obtain a new HS-SCCH structure that can support MIMO transmission by expanding and modifying on the basis of the existing HSDPA HS-SCCH channel structure shown in Table 1.

According to the principle of designing two HS-SCCH signaling supporting the single data stream and the double data stream in the same embodiment, the sequence length and display method of various control information on the HS-SCCH in HSPA + are shown below. present.

1) Slot Code Channel Distribution

13bits is adopted. Same as the existing standard, that is, 8 bits are used to indicate the code channel and 5 bits are used to indicate the slot regardless of the HS-SCCH of the single data stream or the double data stream format.

2) modulation method

First Marking Method:

If 64QAM is not supported, there can be three modulation schemes on each data stream: 16QAM, QPSK, and no modulation scheme, respectively. That is, after combination, the modulation schemes are 16QAM-16QAM, QPSK-QPSK, 16QAM-QPSK, There are six methods: QPSK-16QAM, 16QAM-No, and QPSK-No.

Using 3 bits can mark these six possible modulation schemes.

Second marker method:

When supporting 64QAM, there can be four modulation schemes on each data stream: 16QAM, 64QAM, QPSK, and no modulation scheme, respectively. The combination scheme is the same as the case of not supporting 64QAM. In addition, since the modulation scheme of 64QAM is increased, 1 bit is increased correspondingly and the marking is performed using 4 bits.

Third marker method:

A bit design scheme of 1 + 1 can be used. Each of these two bits indicates one data stream, and 1 + 1 is defined for the sake of understanding in the embodiment, using 1 bit for a single data stream and double data stream. This means that 2 bits are used, that is, one data stream is marked using one bit, and when transmitting a single data stream, one bit is marked with one bit, the other one bit is filled with invalid bits, and a double data stream is used. In transmission, one data stream is marked with two bits.

In the case of MIMO double data stream transmission, two data streams are each independently controlled by AMC and the detection output of the UE side can separate these two data streams. Proceed independently for the stream. Therefore, in order to support the double data stream transmission of MIMO, this signaling can be installed in two bits, of which each bit is used to indicate a modulation scheme on one data stream. If a single data stream is sent, only 1 bit is significant and the other 1 bit is invalid. Specific implicit instructions may be as follows.

X _{ms , 1} Modulation Scheme 0 QPSK or 64QAM One 16-QAM

The UE determines the modulation scheme

If X _{ms , 1} = 1, then the modulation scheme of the data stream is 16QAM;

If X _{ms , 1} = 0

1. The UE first calculates a physical resource load capability and a transmission bit rate on the data stream;

The transmission bit rate is a physical resource distributed by the RAN (Radio Access Network) using the HS-SCCH and the maximum bit rate that QPSK can launch; The calculation of the physical resource load capability may be performed using channelization code set information and slot information on the HS-SCCH. The transmission bit rate corresponds to the TBS on the HS-SCCH.

2. If the physical resource load capability on the data stream is multiplied by R and less than the transmission bit rate and the value range of R is [0,1], the data stream modulation scheme is 64QAM; The data stream modulation scheme is QPSK when equal to or greater than the transmission bit rate. Those skilled in the art, in the practice of the present invention, R can be obtained through simulation and the range of the value is between [0, 1], but after the value of R is determined, the value of R is fixed when proceeding. It can be understood that it is not a random selection in the range 0,1]. In other words, although the value of R is in the range of [0,1], in the present invention, the value of R is determined in advance through a simulation method, rather than being arbitrarily selected within this range to be R. When is [0,1], the judgment is performed according to the above method.

In addition, in the embodiment, when the physical resource load capacity is multiplied by R, such as the transmission bit rate, it is determined to be QPSK. That is, at the code rate crossing point, it is an opening interval for 64QAM and a closing interval for QPSK. This can be easily understood by those skilled in the art.

Fourth Marking Method:

In implementing the present invention, it is also possible to save signaling usage by instructing signaling by employing a method of omitting all modulation schemes. In implementing the present invention, first, two switching points between three modulation schemes are obtained, and code rates corresponding to the switching points are C1 and C2, respectively, wherein C1 corresponds to a switching point code rate between QPSK modulation scheme and 16QAM modulation scheme, and C2. Corresponds to the switching point code rate between the 16QAM modulation scheme and the 64QAM modulation scheme. After resource allocation is given for each transport block, the corresponding code rate C can be obtained, a suitable modulation scheme can be obtained based on the mapping relationship, and the code rate C can be obtained based on the resource arrangement information of the transport block on the data stream. Can be obtained. Specific implementation may be as follows. In other words

If C <C1, then QPSK modulation scheme;

If C1 ≦ C <C2, then 16QAM modulation scheme;

If C≥C2, the 64QAM modulation scheme is used. In particular, the switching point code rate value can be obtained through simulation.

In implementing the third and fourth marking schemes, it is necessary to identify whether a single data stream or a double data stream is adopted by adopting a different marking scheme. The determination can be performed using the following TBS.

The four types of markers can be divided into two categories, which are distinguished by whether or not they support 64QAM. If all of the 2, 3, and 4 markers support 64QAM, they belong to the same category. Determined by the establishment of standards and the support of facilities; One of the second, third, and fourth marking schemes should be selected. For example, QPSK / 16QAM / 64QAM implicitly indicates three modulation schemes by supporting the 64QAM modulation scheme and employing the omitting scheme.

3) TBS

For a single data stream, 6bits significant digits + 6bits padding digits can be used, where padding digits are zero;

6 + 6 = 12bits can be used for double data streams (each stream uses 6bits);

In order to keep the TBS signaling lengths of the single data stream and the double data stream the same, 6 bits of zeros are increased in the single data stream TBS signaling so that the total bit length is 12.

At the same time, this design of TBS information also carries data stream count information, for example:

Uses 12 bit positions to carry TBS information and pads invalid bit 0 to 6 bit positions when the data stream of the MIMO transmission is a single data stream. Invalid bit 0 to 6 bit positions among the bit positions carrying TBS information. In a padded situation, it may be determined that the information of the number of data streams carried is a single data stream.

4) HAP

Both single data streams and double data streams use 3 bits, in which eight processes are indicated for a single data stream, and eight processes on each stream are bound for two pairs.

Further, one bit may be increased in HAP information. In this scheme, 4 bits are used for both a single data stream and a double data stream, of which 3 bits indicate 8 processes or 8 sets of processes, and another 1 bit indicates the first transmission or retransmission stream. If the number is different, it is used to indicate which stream on which retransmission is a process or on which stream to retransmit, and increases the flexibility of system dispatch.

5) Redundancy Version (RV) Information

2 + 2 = 4bits. In a similar way to TDD HSUPA (High Speed Uplink Packet Access), we define RV parameters to be used for every retransmission in advance.For example, we define the RV to be used every time for three retransmissions. Then, based on the 2-bit RV signaling on each data stream, it is possible to know the number of transmissions of the data block on the data stream in the past, so as to obtain an RV parameter used for this transmission based on a dictionary definition.

Or, instead of defining RV parameters retransmitted each time in advance by adopting a method similar to FDD (Frequency Division Duplex), one notation is assigned to each RV parameter, and the signaling indicates that it is an RV parameter notation. The notation is obtained by decoding the signaling, thereby obtaining the RV parameter used for this transmission, but the notation is not representative of the transmission order.

The notation 2 + 2 defined in the embodiment indicates using 2 bits for a single data stream and 4 bits for a double data stream, of which every 2 bits indicates the RV of one data stream. The meaning is the same as that of TDD HSUPA or FDD.

If a single data stream is sent, only 2 bits are meaningful and the remaining 2 bits are invalid.

6) HCSN

It adopts 3bits and can be the same as the existing technology because it is independent of the number of data streams.

7) H-RNTI

It uses 16bits and can be the same as the existing technology because it is independent of the number of data streams.

8) Since the number of data streams is 0 bit and may be implicitly indicated by other signaling, signaling may not be newly increased. This may refer to the TBS and the like.

SS and TPC are no different from the existing technology and will not be described again in the embodiments.

In the construction of the HS-SCCH, the new signaling does not need to keep the total number of bits consistent with the existing one, and only displays both the control information and the dispatch information. In order to obtain a better effect, in implementing the present invention, it is necessary to support the transmission of a double data stream with as few bits as possible. However, this does not mean that one embodiment is implemented, but two principles of establishing HS-SCCH signaling are realized. In other words, for the single data stream transmission and the double data stream transmission, not only should the total number of bits applied to each part of the HS-SCCH signaling match, but also the data stream transmission during HS-SCCH signaling. It should be ensured to carry control information and dispatch information. Therefore, since the total length of signaling of a single data stream is generally shorter than that of the double data stream, it is necessary to increase the signaling total length of the single data stream to be the same as the signaling of the double data stream through a padding scheme.

A concrete implementation of the coded transmission process of the HS-SCCH signaling constructed below will be described.

In the present invention, the coding procedure may be the same as the existing scheme, but since the signaling length is different, specific parameters of the procedure, such as coding code rate and rate matching, need to be installed based on the signaling length.

In implementing the present invention, the HS-SCCH coding scheme of 1.28 Mcps TDD HSDPA in the existing standard can be used, that is, multiplexing and uniformly coding all signaling information on the MIMO HS-SCCH channel together. In the embodiment, since the total signaling lengths of the single data stream and the double data stream are the same, only a kind of coding rate may be employed when coding. See FIG. 1 for an implementation procedure.

Multiplexing procedure: multiplexing all control information bits together on a MIMO HS-SCCH channel;

CRC procedure: apply an exclusive logical OR of the 16-digit UE ID and the CRC;

Channel coding procedure: coding for output of CRC procedure using 1/3 convolutional code;

Rate Matching Procedure: The number of bits deleted is about one third of the total number of bits after coding and allows loading into two SF16 code channels;

The interleaving procedure and the physical channel partitioning procedure can be performed according to the existing scheme.

Physical Channel Mapping Procedure: After mapping, put two SF16 code channels.

The actions of each procedure in the coding procedure are mainly:

Apply an exclusive logical sum of the CRC and the UE ID and perform an error detection function using the cyclic redundancy check on the transport block, and at the same time, indicate the UE to which information on this channel belongs through the UE ID;

The convolutional code used during the channel coding procedure is used to overcome the error code during the transmission process;

In the rate matching procedure, the bit sequence of the coding output is appropriately deleted according to the puncturing pattern so that the bit sequence length after the rate matching is suitable for the distributed physical channel loading capacity, thereby improving transmission efficiency and still deleting correctly after deleting. To ensure that there is;

The function of the interleaving procedure is to overcome accidental error;

The physical channel partitioning procedure divides the interleaved sequence into two stages, in order to distribute the interleaved sequence to two physical channels;

In the physical channel mapping procedure, an output bit stream divided by a physical channel is mapped onto correspondingly distributed code channels.

Based on the same inventive concept, the present invention also provides a high speed shared control channel signaling processing system, which will be described below in detail with reference to the accompanying drawings.

3 is a schematic diagram of a structure of a fast shared control channel signaling processing system according to an embodiment of the present invention.

A length determination module 301 for determining a signaling length on the HS-SCHH based on control information and dispatch information required to proceed with MIMO double data stream transmission;

An acquisition module 302 for obtaining control information and dispatch information required by the data stream;

And a signaling establishment module 303 for establishing HS-SCCH signaling according to the signaling length and based on the obtained control information and dispatch information.

In addition, the processing system may further include a coding module 304 for coding the constructed HS-SCCH signaling.

Further, the processing system may further include a UE 305, which may include a first determination module, a second determination module, a third determination module, and a fourth determination module, and the above-described determination module may correspond to corresponding signaling. Based on the construction method, the function of completing the control information and the dispatch information carried by the signaling in the embodiment will be described.

In carrying out the invention the acquisition module

Data stream number determination means for deciding whether the data stream during MIMO transmission is a single data stream or a double data stream;

Acquire control information and dispatch information required by the single data stream when determined to be a single data stream; And information acquiring means for acquiring control information and dispatch information required for each data stream when it is determined as a double data stream.

In implementing the present invention, the signaling establishment module further advances the HS-SCCH signaling length constructed based on the control information and the dispatch information determined in establishing the HS-SCCH signaling according to the signaling length. When small, the invalid bit positions are padded by the signaling length during HS-SCCH signaling.

The acquiring module further comprises one or a combination of data stream number information, slot code channel distribution information, modulation scheme information, TBS information, HAP information, RV information, HCSN information, H-RNTI information, and new data indication information. Acquire control information and dispatch information.

Further, the signaling establishment module carries data stream number information through modulation method information and / or TBS information when control information and dispatch information required for the data stream includes modulation method information, TBS information, and data stream number information. .

Correspondingly, in this scheme, the first determination module in the UE identifies the number of data streams carried therein. The first judging module determines that the number of data streams carried when the modulation scheme of two data streams is included in the modulation scheme information is a double data stream and is portable when the modulation scheme information includes only the modulation scheme of only one data stream. It is determined that one data stream number information is a single data stream.

The signaling construction module furthermore carries the TBS information using 12 bit positions when carrying the data stream number information through the TBS information during HS-SCCH signaling and when the data stream of the MIMO transmission is a single data stream, Pad the invalid bit positions into six bit positions.

Correspondingly in this scheme, it is possible to identify the number of data streams carried therein through the second determination module in the UE. The second judging module determines that the number of data streams carried is a single data stream when the invalid bit positions are padded on 6 bit positions among the TBS information carrying bits. Otherwise, the number of carried data streams is double data. Decide on a stream.

In addition, the signaling establishment module further instructs a process or retransmit data stream on the retransmission data stream when the number of first transmission and retransmission data streams is increased by increasing one bit among the bits for marking HAP information in HC-SCCH signaling. do.

Regarding the determination of the modulation method information, the modulation method information carried therein is identified through the third or fourth decision module in the UE.

The third judging module acquires two switching points between the QPSK modulation method, the 16QAM modulation method, and the 64QAM modulation method of the data stream when determining the modulation method based on the modulation method information, and code rates corresponding to the switching points are C1 and C2, respectively. Among them, C1 corresponds to the switching point code rate between the QPSK modulation method and the 16QAM modulation method, and C2 corresponds to the switching point code rate between the 16QAM modulation method and the 64QAM modulation method.

Obtain a code rate C based on resource allocation information of the transport block on the data stream;

In carrying out the present invention, C, C1, and C2 are obtained without any limitations in advance, and are used when making judgments.

If C <C1, determine that the modulation scheme corresponding to the data stream is the QPSK modulation scheme;

If C1≤C <C2, it is determined that the modulation scheme corresponding to the data stream is the 16QAM modulation scheme;

If C≥C2, it is determined that the modulation scheme corresponding to the data stream is a 64QAM modulation scheme.

The third determination module may obtain a corresponding code rate C for the transport block on each data stream based on resource allocation information, and determine the modulation scheme by comparing the code rate C with the threshold values C1 and C2.

The fourth judging module determines that carrying the modulation scheme information carries two bit positions and each bit carrying the modulation scheme of one data stream when determining the modulation scheme through the modulation scheme information. When the bit digit corresponding to a data stream is 1, the data stream modulation scheme corresponding to the bit digit is determined to be 16QAM. When the value of the bit digit is 0, the physical resource load capability and the transmission on the data stream corresponding to the bit digit are transmitted. If the bit rate is obtained and the physical resource load capacity is multiplied by R and less than the transmission bit rate and the range of R is [0,1], the data stream modulation scheme corresponding to this bit position is 64QAM and if the physical resource load capacity is multiplied by R If the post-transmission bit rate is larger and the range of R is [0,1], the data stream modulation scheme corresponding to this bit position is QPSK. Likewise, this R value can be obtained by simulation in advance.

Since the present system has the same technical idea of solving the technical problem as the high speed shared control channel signaling processing method and the technical means used to solve the technical problem, the specific embodiment of the system may refer to the implementation method of the processing method. .

In order to better understand the present invention, the following describes the HS-SCCH signaling decoding process performed at the UE side to make the present invention more fully understood.

In the above embodiment, after constructing, coding, and transmitting signaling with the same signaling length, the UE performs decoding decision on the MIMO HS-SCCH at the downlink receiving end of the TDD HSPA + to control and dispatch information required for decoding the HS-DSCH channel. Must be obtained. The processing method of receiving the MIMO HS-SCCH by the UE of the receiving end is as follows. In other words

Through implementation of the high speed shared control channel signaling processing method or the high speed shared control channel signaling processing system, the length of MIMO HS-SCCH signaling bit sequence of a single data stream and a double data stream is the same, that is, only one puncturing pattern exists in rate matching. Lack of blind decoding to decode once to obtain all the signaling information and to avoid the need for the UE to decode twice, resulting in lower decoding efficiency, increased complexity and increased electrical energy consumed by the UE Overcome the point.

In carrying out the present invention, the UE performs the determination by using the TBS when the Node B acquires information on the number of data streams to be transmitted by the Node B. For example, if all 6 bits are 0, HS-SCCH signaling of a single data stream Otherwise it is described as HS-SCCH signaling of a double data stream. Alternatively, the determination is performed using the modulation scheme information. For example, two design schemes, a single data stream and a double data stream, among the first marker scheme and the second marker scheme may be included, and data stream number information may be obtained therefrom.

As described above, when the data stream number information is determined, other downlink signaling can be obtained, that is, corresponding signaling information is obtained from the significant bit position of the other signaling portion.

4 is a flow diagram in which the UE receives MIMO HS-SCCH signaling, and as shown in the drawings by the above description, when the UE receives MIMO HS-SCCH signaling, it may be performed through the following procedure. In other words

Procedure 401: the UE receives and decodes MIMO HS-SCCH signaling;

Procedure 402: Determine whether the decoding is correct and enter procedure 403 if "yes", and enter procedure 406 if no.

Procedure 403: proceed with UE ID detection and determine whether it belongs or does not belong to this UE, if yes, enter procedure 404; if no, enter procedure 406;

Step 404: acquire data stream number information based on the TBS information or the modulation scheme information;

Step 405: obtain corresponding control information and dispatch information from the valid bit positions of the other signaling based on the data stream number information;

Step 406: Discard the received data.

As can be seen from the above description, in the embodiment of the present invention, when constructing HS-SCCH signaling in a TDD system supporting MIMO, the signaling total length supporting a single data stream and the signaling total length supporting a double data stream are the same. When the receiver decodes the control channel, it decodes only once to obtain data stream number information and other control information. In a specific embodiment, the signaling total length of the single data stream and the signaling total length of the double data stream may be equalized by padding invalid bit positions in the signaling of the single data stream.

When decoding HS-SCCH signaling, first implicitly acquires data stream number information, and then obtains other signaling information based on the data stream number information. The signaling implicitly indicating the data stream number information may be TBS signaling or modulation scheme signaling.

Further, implicit design can be used to construct modulation scheme information on HS-SCCH signaling, for example, by eliminating all of this signaling and pre-simulating to determine the code rate transition point between each modulation scheme. Or partially implicitly indicating this information, i.e., using 1 bit for each data stream and then combining pre-simulation to determine the code-rate switching point between some of the modulation schemes.

Therefore, in the HS-SCCH scheme supporting MIMO among the TDD HSPA + system submitted by the embodiment of the present invention, the blind detection is not required, the receiving end needs to decode only once, and there is no need to indicate the number of data streams with newly increased signaling. Acquisition implicitly through signaling reduced the amount of decoding work received by the UE. This enables better support for MIMO technology in HSPA +, improving data transfer rates and system throughput.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention within the spirit and scope of the present invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Description of the Related Art [0002]
301: length determination module 302: acquisition module
303: signaling building module 304: coding module
305: UE

Claims (21)

Determining a signaling length on the downlink high speed shared control channel HS-SCCH based on control information and dispatch information required for multi-input multiple-output MIMO double data stream transmission;
Obtaining control information and dispatch information required by the data stream;
Procedure for building HS-SCCH signaling carrying control information and dispatch information acquired according to the determined signaling length
Including;
A procedure of acquiring control information and dispatch information required by the data stream is specifically
Determine whether the data stream during MIMO transmission is a single data stream or a double data stream;
Acquiring control information and dispatch information required by the single data stream when determining that it is a single data stream, and acquiring control information and dispatch information required by each data stream when determining as a double data stream.
High speed shared control channel signaling processing method, characterized in that.
delete The method of claim 1,
The procedure for establishing HS-SCCH signaling according to the determined signaling length is specifically
When the HS-SCCH signaling length carrying the constructed acquired control information and dispatch information is smaller than the determined signaling length, padding invalid bit positions to HS signaling length during HS-SCCH signaling.
High speed shared control channel signaling processing method, characterized in that.
The method of claim 1,
Control information and dispatch information required by the data stream
Data stream count information, slot code channel distribution information, modulation scheme information, transport block size TBS information, handshake authentication protocol HAP information, duplicate version RV information, HS-SCCH cyclic sequence number HCSN information, high speed downlink shared channel indicator H- RNTI information, including one or a combination of new data indication information
High speed shared control channel signaling processing method, characterized in that.
5. The method of claim 4,
When the control information and the dispatch information required by the data stream include modulation scheme information, TBS information, and data stream number information.
Procedure for carrying data stream number information through modulation method information and / or TBS information
The fast shared control channel signaling processing method further comprising.
The method of claim 5, wherein
The procedure of carrying data stream number information through modulation scheme information during HS-SCCH signaling is specifically
Includes a modulation scheme of two data streams in modulation scheme information when determining that the data stream at the time of MIMO transmission is a double data stream; When the data stream in MIMO transmission is determined to be a single data stream, a modulation scheme of only one data stream is included in the modulation scheme information.
High speed shared control channel signaling processing method, characterized in that.
The method of claim 5, wherein
The procedure of carrying data stream number information through TBS information during HS-SCCH signaling is specifically
In the HS-SCCH signaling, 12 bits are used to carry TBS information and when the data stream of the MIMO transmission is a single data stream, padding invalid bit positions to 6 bit positions of the 12 bit positions.
High speed shared control channel signaling processing method, characterized in that.
5. The method of claim 4,
When control information and dispatch information required by the data stream include HAP information,
In HS-SCCH signaling, when the number of first transmission and retransmission data streams is increased by increasing one bit among the bits for marking HAP information, it indicates a process on the retransmission data stream or a data stream for retransmission.
High speed shared control channel signaling processing method, characterized in that.
5. The method of claim 4,
Two bits of HS-SCCH signaling carry the modulation scheme information, carry the modulation scheme information of one data stream in each bit slot, and correspond to the data stream when the data stream modulation scheme is determined to be 16QAM. Padding 1 in the bit position and padding 0 in the bit position corresponding to the data stream when the data stream modulation method is determined to be 64QAM or QPSK.
High speed shared control channel signaling processing method, characterized in that.
A length determination module for determining a signaling length on the HS-SCCH based on control information and dispatch information required to perform MIMO double data stream transmission;
An acquisition module for acquiring control information and dispatch information required by the data stream;
Signaling establishment module for constructing HS-SCCH signaling based on control information and dispatch information acquired according to the signaling length
/ RTI &gt;
The acquisition module
Data stream number determination means for deciding whether the data stream during MIMO transmission is a single data stream or a double data stream; And
Acquire control information and dispatch information required by the single data stream when determining that the data stream is a single data stream; And information acquisition means for acquiring control information and dispatch information required by each data stream when determining that the data stream is a double data stream.
High speed shared control channel signaling processing system, characterized in that.
delete 11. The method of claim 10,
The signaling establishment module may also be configured to construct HS-SCCH signaling according to the determined signaling length.
When the HS-SCCH signaling length constructed based on the obtained control information and dispatch information is smaller than the determined signaling length, padding invalid bit positions up to the signaling length during HS-SCCH signaling.
High speed shared control channel signaling processing system, characterized in that.
11. The method of claim 10,
The acquisition module also
Required control information and dispatch including one or a combination of data stream number information, slot code channel distribution information, modulation scheme information, TBS information, HAP information, RV information, HCSN information, H-RNTI information, and new data indication information Obtaining information
High speed shared control channel signaling processing system, characterized in that.
The method of claim 13,
The signaling establishment module may also carry the data stream number information through modulation method information and / or TBS information when the control information and dispatch information required by the data stream include modulation method information, TBS information, and data stream number information. doing
High speed shared control channel signaling processing system, characterized in that.
15. The method of claim 14,
The system also includes a terminal UE and the terminal is
Determining that the number of data streams carried is a double data stream when the modulation scheme of two data streams is included in the modulation scheme; And a first judging module for determining that the number of data streams carried is a single data stream when the modulation scheme information includes the modulation scheme of only one data stream.
High speed shared control channel signaling processing system, characterized in that.
15. The method of claim 14,
The signaling establishment module may also carry the TBS information using 12 bit positions when carrying the data stream number information through the TBS information during HS-SCCH signaling and the 12 when the data stream of the MIMO transmission is a single data stream. Padding the invalid bit positions in six bit positions of the bit positions
High speed shared control channel signaling processing system, characterized in that.
17. The method of claim 16,
The terminal is also,
And a second judging module for determining that the number of data streams carried is a single data stream when invalid bit positions are padded in six bit positions among the bit positions carrying the TBS information.
High speed shared control channel signaling processing system, characterized in that.
The method of claim 13,
The signaling establishment module may further generate a data stream for performing a process or retransmission on the retransmission data stream when the number of first transmission and retransmission data streams is increased by increasing one bit among bits for marking HAP information in HS-SCCH signaling. Directed
High speed shared control channel signaling processing system, characterized in that.
The method of claim 13,
The terminal is also,
When the modulation scheme is determined based on the modulation scheme information, two switching points are obtained between the QPSK modulation scheme, the 16QAM modulation scheme, and the 64QAM modulation scheme of the data stream, and the code rates corresponding to the switching points are C1 and C2, of which C1 is QPSK. Corresponds to the switch point code rate between the modulation scheme and the 16QAM modulation scheme, and C2 corresponds to the switch point code rate between the 16QAM modulation scheme and the 64QAM modulation scheme and obtains a code rate C based on the resource allocation information of the transport block on the data stream.
If C <C1, determine that the modulation scheme corresponding to the data stream is the QPSK modulation scheme;
If C1≤C <C2, it is determined that the modulation scheme corresponding to the data stream is the 16QAM modulation scheme;
If C≥C2, further comprising a third judging module for determining that the modulation scheme corresponding to the data stream is a 64QAM modulation scheme;
High speed shared control channel signaling processing system, characterized in that.
15. The method of claim 14,
The signaling establishment module may also carry the modulation scheme information of one data stream in each bit position and carry the modulation of the data stream corresponding to the bit position when carrying the modulation scheme information using two bit positions in HS-SCCH signaling. Padding 1 at the corresponding bit position when the scheme is 16QAM, and padding 0 at the corresponding bit position when the data stream modulation scheme corresponding to the bit position is 64QAM or QPSK.
High speed shared control channel signaling processing system, characterized in that.
21. The method of claim 20,
The terminal is also,
When the modulation scheme is determined through the modulation scheme information, it is determined that carrying the modulation scheme information in the HS-SCCH signaling is 2 bit positions, and each bit position carries a modulation scheme of one data stream and is padded at the bit positions. Is 1, the data stream modulation scheme corresponding to the bit position is 16QAM and when padded at the bit position is 0, the physical resource load capability and the transmission bit rate on the data stream corresponding to the bit position are obtained. Is multiplied by R to less than the transmission bit rate, the data stream modulation scheme corresponding to the corresponding bit digit is 64QAM. The R further includes a fourth determination module obtained through a pre-simulation
High speed shared control channel signaling processing system, characterized in that.

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