WO2008028365A1

WO2008028365A1 - High speed uplink packet access data and signaling transmission method in the time divisional cdma system

Info

Publication number: WO2008028365A1
Application number: PCT/CN2006/003773
Authority: WO
Inventors: Hu Liu; Hua Rui; Peng Geng; Weiwei Yin; Yincheng Zhang; Hui Chen
Original assignee: Zte Corporation
Priority date: 2006-08-24
Filing date: 2006-12-30
Publication date: 2008-03-13
Also published as: CN101132230A; CN101132230B

Abstract

A high speed uplink packet access data and signaling transmission method in the time divisional CDMA system includes data transmission and signaling transmission. The signaling transmission method includes the steps of: the UE applies channel coding to the Transport Format Combination, Retransmission Sequence Number and Hybrid Automatic Repeat Request Process Sequence Number; scrambling the encoded signaling; interleaving the scrambled signaling; speed matching the interleaved signaling according to the speed matching manner fixed by the perforating template; mapping the speed matched signaling to the physical channel. The present invention can allocate the resource flexibly and efficiently, and can avoid the negative impact to other UE uplink service caused by error de-spread.

Description

TECHNICAL FIELD The present invention relates to a wireless communication system, in particular, a high-speed uplink packet access in a time division code division multiple access wireless communication system. Method of data and signaling transmission. BACKGROUND OF THE INVENTION First, the English abbreviation corresponding to the English abbreviation used should be explained:

TPC: Transmitter Power Control transmission power control.

TFC: Transport Format Combination.

TFCI: Transport Format Combination Indicator 4 §. E-PUCH: E-DCH Physical Uplink Channel E-DCH physical uplink ^ ί言道.

E-DCH: Enhanced Dedicated Channel Enhanced Dedicated Channel

E-HICH: E-DCH HARQ Acknowledgement indicator channe E-DCH HARQ acknowledgment indicator channel.

E-AGCH: E-DCH Absolute Grant Channel E-DCH Absolute Authorized Channel. TBS : Transport Block Set Transport block set.

RSN : Retransmission Sequence Number Retransmits the serial number.

HARQ : Hybrid Automatic Repeat Request Blend automatic retransmission request.

Node B: Node B (base station).

Convolutional coding.

TC: Turbo coding Turbo coding.

RM ( 32 , 6 ): Reed Muller code, 6-bit input 32-bit output. RM ( 32 , 10 ): Reed Niuller code, 10-bit input, 32-bit output. In the third generation mobile communication system, in order to provide higher rate uplink packet services and improve spectrum utilization efficiency, 3GPP (3rd Generation Partnership Project) introduces high speed uplink packet access (HSUPA) in the specifications of WCDMA and TD-CDMA systems. : High Speed Uplink Packet Access ) feature, that is, uplink enhancement.

The HSUPA system is also known as an uplink augmentation system. In the TD-CDMA system, the physical layer of the HSUPA system introduces an E-PUCH physical channel for transmitting the CCTrCH of the E-DCH type. The scheduling entity located in the MAC~e of the Node B is responsible for the allocation of the E-PUCH physical resources. Some of the MAC-e uplink 4 commands are carried by two newly introduced uplink control channels, including E-UCCH (E-DCH Uplink Control Channel E-DCH uplink control channel) and E-RUCCH (E-DCH Random). Access Uplink Control Channel E-DCH random access uplink control channel) mainly transmits HARQ and auxiliary scheduling related information, and these channels are terminated at Node B. The E-UCCH is used to transmit information related to E-TFCI and HA Q. The E-UCCH information may be transmitted in one or more time slots of the E-DCH and multiplexed with the E-DCH onto a set of E-PUCHs within the TTI. The multiplexing mode of E-UCCH is to use the physical layer indication domain. The E-RUCCH is used to transmit information related to the auxiliary scheduling. The E-RUCCH can be mapped to a random access physical channel resource and can share some resources with the existing P ACH. The information carried by the E-UCCH and the E-RUCCH is self-contained in one time slot. The downlink signaling channels E-AGCH and E-HICH are newly introduced. The E-HCH is used to transmit the authorization information; the E-HICH is used to carry the 4 亍 E-DCH HARQ indication information. 1 is a diagram showing an E-PUCH burst structure of an HSUPA with E-UCCH and TPC of a conventional TD-CDMA system. The E-PUCH code channel allocation method of the HSUPA technology in the above TD-CDMA system is completed by the downlink E-AGCH. One of the information carried by the E-AGCH includes: CRRI (code resource related information), a node for indicating the OVSF code tree, expressed by 5 bits. For each transport block length, the UE (mobile terminal) upper layer configuration determines which spreading factor and modulation scheme to use for the E-PUCH burst, and whether to carry the E-UCCH (at least one E in the E-DCH TTI) The PUCH channel is used to carry the E-UCCH to ensure the real-time performance of the scheduling information. The E-UCCH consists of 2 parts: E-UCCH part 1 and E-UCCH part 2. The E-UCCH part 1 is used to carry the transport block length information, and has the following characteristics: (1) 32 bits long; (2) TFCI i mapped to the E-PUCH or located in the midamble (i) ^ Sequence) 16 bits on both sides; (3) Use the spreading factor of SF-16 and use the highest spreading code number on the OVSF subtree; (4) Use QPSK modulation.

E-UCCH part 2, used to carry RSN, ACK/NACK, has the following characteristics:

(1) 32 bits long, RSN is 2 bits, ACK/NACK is 3 bits; (2) uses the same spreading factor as the data load; (3) uses the same modulation method as the data load. The E-UCCH parti is mapped to the physical channel indication field and needs to be decoded first. Since the Node B needs to derive the SF and modulation scheme used by the transport block according to the transport block length information, the transport block length information must be transmitted in a fixed, known manner, thus mapping it to the existing version of the TFCI domain, and Fixed SF=16 and QPSK modulation schemes are used. The HSUPA technology in the above TD-CDMA system can be applied to the TD-SCDMA system, and the detailed information can refer to the existing 3GPP protocol. However, the allocation method of E-PUCH code channel resources leads to waste of resources and difficulty in resource allocation. For the Node B, if the TFCI of the E-UCCH part 1 is wrong, the data part is in error, and the joint detection of the Node B or other interference elimination 4 is adversely affected to other UE uplink services. In addition, since Partl and Part2 need to occupy 64 bits, the code channel utilization is affected. SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is that the method for allocating E-PUCH code channel resources in the prior art may cause resource waste and resource allocation difficulties when used in a TD-SCDMA system, which may cause data errors, and other UEs. Upside business has an adverse impact. It is required to provide a method for allocating a code channel resource for high-speed uplink packet access, which has flexible resource allocation and high utilization rate, and can avoid adverse effects on uplink services of other UEs caused by erroneous despreading. In order to solve the above technical problem, the present invention provides a data transmission and signaling transmission method for high-speed uplink packet access of a time division code division multiple access system, including data transmission and signaling transmission, and the signaling transmission includes the following steps: (1) User The device performs channel coding on the transport format set, the retransmission sequence number, and the mixed automatic retransmission request process sequence number;

(2) scrambling the signal encoded by step (1); (3) interleaving the signal scrambled in step (2);

(4) Rate matching the interleaved signal in step (3) according to a rate matching manner fixed by the puncturing template;

(5) The step (4) rate matched signaling is mapped to the physical channel. among them

The TFC, RSN, HARQ process sequence number and the data portion may have different spreading factors;

The TFC, RSN, and HARQ serial numbers are fixed-spread by SF-16, and the coding uses CC (code rate greater than or equal to 1/3, less than or equal to 1/2) or RM (32, 6), RM (32, 10) The Node B can indicate the code tree node allocated to the user through the CRRI of the E-AGCH; the present invention also provides a data transmission and signaling transmission method for the time division code division multiple access system at high speed, including data transmission And signaling transmission, signaling transmission includes the following steps:

1) the user equipment performs channel coding on the transport format set, the retransmission sequence number, and the mixed automatic retransmission request process sequence number;

2) Adding the encoded signal in step 1) to 3) interleaving the scrambled signaling in step 2);

4) Rate matching the interleaved signaling in step 3) according to the rate matching method fixed by the puncturing template;

5) The step 4) rate matching signaling and data are interleaved by a fixed interleaving template;

6) Map the information after the step 5) signaling and data are interleaved to the physical channel. among them

The TFC, RSN, HARQ process sequence number and the data part have the same spreading factor; the data part adopts TC coding or CC coding, and the other (TFC, RSN, HARQ process serial number) part adopts CC coding (the code rate is greater than or equal to 1/3, Less than or equal to 1/2) or RM (32, 6), RM (32, 10); Data and signaling are interleaved; if the data adopts 16QAM modulation mode, the Bay' J TFC, RSN> HARQ process number part adopts CC coding (the code rate is equal to 1/3), and no rate matching is performed; if the data adopts QPSK modulation mode, The TFC, RSN, and HARQ process sequence numbers are CC coded (the code rate is equal to 1/2 or 1/3), and rate matching is required.

It can be seen that the present invention proposes a new method for data and signaling transmission in the E-PUCH, which is determined by the Node B > according to the upload service level of the UE and the size of the uploaded service, and the radio resource condition. The E-AGCH specifies a code channel or a code tree node for the UE. The UE uses the above two methods to fully use the configured code channel resources, thereby achieving high resource utilization and avoiding other problems caused by erroneous despreading. The adverse effects of the uplink services of the UE are very flexible and can be fully utilized, which solves the problem that resources may be wasted or resource allocation may be difficult in the prior art, and interference may be caused to other UEs. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an E-PUCH burst structure diagram with E-UCCH and TPC; FIG. 2 is an E-PUCH burst structure diagram of HSUPA method 1 in the present invention; FIG. 3 is a diagram of ESPUP method II in the present invention. - FIG. 4 is a flowchart of an E-PUCH symbol level processing module of the HSUPA method 1 of the present invention; FIG. 5 is a flowchart of an E-PUCH symbol level processing module of the HSUPA method 2 of the present invention; The following takes the TD-SCDMA system as an example, and details the processing method of the data and signaling transmission of the HSUPA technology E-PUCH in the time division code division multiple access system proposed by the present invention with reference to the accompanying drawings. Method 1: Set: TFC: 6 bits;

RSN: 2 bits; HARQ process sequence number: 3 bits Signaling is 11 bits, using Convolutional Coding (1/3 or 1/2) convolutional coding; Data: 30 bits: Spreading factor: The spreading factor of the data and signaling part is different; The CRRI of the -AGCH may be indicated as a code* node assigned to the user.

The E-PUCH burst structure adopts the structure shown in Figure 2, and the data and signaling transmission flow is shown in Figure 4.

The TFC, RSN, and HARQ serial numbers are fixed spread spectrum with SF = 16, and the coding uses CC (code rate is greater than or equal to 1/3, less than or equal to 1/2) or RM (32, 6), RM (32, 10) The data transmission part is substantially the same as the prior art: mainly includes the following sub-modules: CRC check sub-module; coding block partition sub-module; channel coding sub-module; physical layer HARQ sub-module, rate matching module; bit scrambling sub-module; HS-PUCH interleaving sub-module; 16QAM constellation sub-module; physical channel mapping sub-module; the connection order of each module is shown in Figure 4. The UE selects the corresponding rate matching mode, performs encoding, puncturing, and the like on the uploaded data, and performs data uploading through the E-PUCH (carrying TFC, RSN, HARQ process ID, TPC, etc. in the code channel). The flow of signaling transmission is as follows: Step 1: α ₂ ,..., α „Enter the channel coding sub-module, where η=11; After the “channel coding sub-module”, get,...,^, where k= ( 11 + 8) χ 3 = 57 bits ( 1/3 CC), or k = ( 11 + 8 ) χ 2 = 38 bits ( 1/2 CC); Step 2: Enter the "Bit Scrambler Module", which will The k-bit is scrambled, and the specific scrambling method can be implemented by using the guarding method in R99 to obtain W ₂ ,...,M , The third step: w _{l W2} ,...,w _A enters the "interleaving sub-module", interleaving k bits, and the specific interleaving method can adopt the interleaving method in R99 to obtain v ₂ ,...,v _t ; Four steps: v, v ₂ ,...,v _3⁄4 enter the "rate matching sub-module", delete some unimportant check digits, so that the encoded rate is between 1/2 and 1/3 (including 1/2 and 1/3), get r, ₂ ,...,r _m , where 38≤ ≤57 _; fifth step: r ₂ ,...,r _m for physical channel mapping, which will represent signaling According to the position of Figure 2, the bits are mapped on both sides of the midamble to get ^,..., . Step 6: The Node B receives the UE upload data and signaling in the corresponding code channel and time slot, and decodes the corresponding data and signaling by using the reverse process of the first step to the fourth step.

Method Two:

The E-PUCH burst structure uses the structure shown in Figure 3. The data and signaling transmission flow is shown in Figure 5. The steps of the data and signaling transmission method of the second method are mostly the same as the steps of the first method. The difference is that: the data and the signaling part have the same spreading factor, and the CRRI of the E-AGCH can be indicated as the code channel allocated to the user. The data part adopts TC coding or CC coding, and other (TFC, RSN, HARQ process serial number) parts adopt CC coding (code rate is greater than or equal to 1/3, less than or equal to 1/2) or RM (32, 6), RM (32, 10); The rate-matched signaling and data are interleaved with a fixed interleaving template, and the 'interleaved information is mapped to the physical 4 words. If the data adopts the 16QAM modulation mode, the TFC, RSN, and HARQ process sequence numbers are CC coded (the code rate is equal to 1/3), and no rate matching is performed. If the data adopts the QPSK modulation mode, the TFC, RSN, and HARQ process sequence numbers are used. CC coding (the code rate is equal to 1/2 or 1/3) requires 4 rate matching. In summary, the present invention has the following characteristics compared with known techniques:

1) The known technique is to separately transmit E-UCCH parti and E-UCCH part2, occupying 64 bits. The present invention combines the two parts, adopting CC (code rate greater than or equal to 1/3, less than or equal to 1/2) or RM ( 32, 6), RM ( 32 , 10 ), requires between 32bits and 57bits, but has little effect on system decoding performance;

2) The known technology is to map the E-UCCH part1 to the physical channel indication domain, and the TFC and the SF of the present invention may have no mapping relationship;

3) After the TFCI despreading error of the known technology, it also affects other users, and the present invention avoids this problem.

Claims

The high-speed uplink packet access data and signaling transmission method of the time division code division multiple access system, including data transmission and signaling transmission, is characterized in that the signaling transmission specifically includes the following steps:

(1) The user equipment performs channel coding on the transport format set, the retransmission sequence number, and the mixed automatic retransmission request process sequence number;

(2) scrambling the signal encoded by step (1);

(3) interleaving the signal after scrambling in step (2);

(4) performing rate matching on the interleaved signaling in step (3) according to a rate matching manner fixed by the puncturing template;

(5) Mapping the rate matching signal in step (4) to the physical channel. The high-speed uplink packet access data and signaling transmission method of the time division code division multiple access system according to claim 1, wherein the transmission format set, the retransmission sequence number, the part of the mixed automatic retransmission request process sequence number, and the data Some use different spreading factors. The high-speed uplink packet access data and signaling transmission method of the time division code division multiple access system according to claim 2, wherein the node B indicates the code tree node allocated to the user through the code resource related information of the E-AGCH channel. The high-speed uplink packet access data and signaling transmission method of the time division code division multiple access system according to claim 2, wherein the transmission format set, the retransmission sequence number, and the part of the mixed automatic retransmission request process sequence number adopt SF = 16 fixed spread spectrum method, the coding method adopts CC (code rate is greater than or equal to 1/3, less than or equal to 1/2) or RM (32, 6), RM (32, 10). The high-speed uplink packet access data and the signaling transmission method of the time division code division multiple access system, including the data transmission and the signal transmission, wherein the signaling transmission specifically includes the following steps:

2) scrambling the encoded signal in step 1);

3) interleaving the scrambled signaling in step 2); 4) rate matching the interleaved signaling in step 3) according to a rate matching manner fixed by the puncturing template;

6) Mapping the information after the step 5) signaling and data are interleaved to the physical channel. The high-speed uplink packet access data and signaling transmission method of the time division code division multiple access system as claimed in claim 5, wherein the transmission format set, the retransmission sequence number, the part of the mixed automatic retransmission request process sequence number, and the data Some use the same spreading factor. The high-speed uplink packet access data and signaling transmission method of the time division code division multiple access system according to claim 6, wherein the node B indicates the specific code channel allocated to the user by using the code resource related information of the E-AGCH. The high-speed uplink packet access data and signaling transmission method of the time division code division multiple access system according to claim 6, wherein the data part adopts TC coding or CC coding, and the transmission format set and the retransmission sequence are used. The partial encoding method of the number, mixed automatic retransmission request process sequence number adopts CC (code rate is greater than or equal to 1/3, less than or equal to 1/2) or RM (32, 6), RM (32, 10). The method for transmitting data and signaling at a high speed in a time division code division multiple access system as described in claim 5, wherein if the data adopts a 16QAM modulation mode, the transmission format set and retransmission in the step 4) are Serial number, mixed automatic retransmission request process serial number part adopts CC coding (code rate is equal to 1/3), does not enter 4亍 rate matching; if data adopts QPSK modulation mode, the transmission format set and retransmission in step 4) The serial number, mixed automatic retransmission request process serial number part adopts CC coding (the code rate is equal to 1/2 or 1/3), and rate matching is required.