WO2008022502A1 - Procédé de synchronisation entre canaux dans un système td-cdma - Google Patents

Procédé de synchronisation entre canaux dans un système td-cdma Download PDF

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Publication number
WO2008022502A1
WO2008022502A1 PCT/CN2006/003775 CN2006003775W WO2008022502A1 WO 2008022502 A1 WO2008022502 A1 WO 2008022502A1 CN 2006003775 W CN2006003775 W CN 2006003775W WO 2008022502 A1 WO2008022502 A1 WO 2008022502A1
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WO
WIPO (PCT)
Prior art keywords
timing
channels
time
multiple access
time interval
Prior art date
Application number
PCT/CN2006/003775
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English (en)
Chinese (zh)
Inventor
Hu Liu
Hua Rui
Peng Geng
Hui Chen
Yinchneg Zhang
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of WO2008022502A1 publication Critical patent/WO2008022502A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H04B7/2637—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for logical channel control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2618—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid code-time division multiple access [CDMA-TDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • 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 a timing relationship between various channels in a wireless communication system, particularly a time division code division multiple access wireless communication system.
  • BACKGROUND OF THE INVENTION 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 in specifications of WCDMA and TD-CDMA systems.
  • HSUPA High Speed Uplink Packet Access
  • the HSUPA system is also known as the uplink enhancement system, referred to as the E-DCH system.
  • the physical layer I of the HSUPA system enters the E-PUCH physical channel for transmitting the CCTrCH of the E-DCH type.
  • the scheduling entity located in the MAC-e of the NodeB is responsible for the allocation of physical resources of the E-PUCH (Enhanced 4 ⁇ Physical Channel).
  • a part of the MAC-e uplink signaling is carried by two newly introduced uplink control channels, and mainly transmits HARQ and auxiliary scheduling related information, and these channels are terminated at the NodeB. It includes E-UCCH (E-DCH uplink control channel) for transmitting E-TFCI and HARQ related information.
  • 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 field.
  • E-RUCCH E-DCH random access uplink control channel
  • the E-RUCCH can be mapped to random access physical channel resources and can share some resources with the existing PRACH.
  • the information carried by E-UCCH and E-RUCCH is self-contained in one time slot.
  • the downlink signaling channels E-AGCH (absolute grant channel) and E-HICH (automatic retransmission request response indicator channel) are newly introduced.
  • E-AGCH is used to transmit authorization information
  • E-HICH is used to carry uplink E-DCH HARQ indication information.
  • the timing relationship of each channel of the HSUPA technology in the above TD-CDMA system is as shown in Figs. 1 to 3, and the E-DCH is always associated with a group of E-AGCH channels and an E-HICH indicator channel.
  • the NodeB scheduler allocates E-DCH transmission resources (slot/code/power:) through the E-AGCH channel; the E-HICH confirms the transmission of the latest E-DCH TTI through the synchronization timing mechanism, as shown in Fig. 1.
  • the UE needs to determine between the first time slot of the E-AGCH and the subsequent E-DCH TTI.
  • the UE shall use the first E-DCH resource allocation instance after the current E-AGCH slot is offset by 6 slots, and the resource may be in the current frame or in the next frame, as shown in the figure. 2.
  • a minimum time interval needs to be defined between the last time slot in the E-DCH TTI and the start time slot of the E-fflCH, which is represented by nE-HICH, and the range is between 4 and 44, which is configured by the upper layer.
  • the UE After completing an E-DCH TTI transmission, the UE shall receive an acknowledgment message on the first E-HICH configuration instance after the last time slot in the current E-DCH TTI is cheaper than the nE-HICH, as shown in FIG. Since TD-SCDMA uses low bit rate technology and introduces synchronization technology, the above timing method is not suitable for TD-SCDMA system. In addition, in order to prevent the UE from frequently searching for E-AGCH and reducing the power consumption of the UE, the present invention proposes a new timing relationship of each channel of the HSUPA technology suitable for the TD-SCDMA system.
  • the present invention provides a timing method between channels in a time division code division multiple access system, which can be adapted to the frame structure of TD-SCDMA, avoiding frequent search of the E-AGCH by the UE, and reducing the UE. This makes the resource allocation more flexible and makes full use of resources.
  • the timing method between channels in the time division code division multiple access system of the present invention includes the following steps.
  • the scheduling request initiated by the user equipment to the base station ends; (2) After the first minimum time interval, the downlink E-AGCH channel is established between the user equipment and the base station.
  • the scheduling request initiated by the user equipment is a first scheduling request.
  • the method further includes: (3) ending the downlink E-AGCH channel; (4) establishing an uplink E-PUCH channel between the user equipment and the base station after the second minimum time interval. Among them, it also includes:
  • a downlink E-HICH channel is established between the user equipment and the base station.
  • the first minimum time interval ranges from 1 time slot to greater than or equal to 21 time slots.
  • the first minimum time interval is 7 time slots.
  • the second minimum time interval ranges from 3 times to 3 times and 24 times or less.
  • the second minimum time interval is 8 time slots.
  • the third minimum time interval ranges from 3 times to 3 times and 24 times or less.
  • the third minimum time interval is 7 time slots.
  • the invention solves the timing relationship between the channels of the HSUPA technology in the time division code division multiple access system, so that it is suitable for the frame structure of the TD-SCDMA, avoids the UE frequently searching for the E-AGCH, reduces the UE's function, and thus makes the resource allocation more Be flexible and make the most of your resources.
  • FIG. 1 HARQ timing scheme in TD-CDMA;
  • FIG. 2 Minimum timing relationship of E-AGCH and E-DCH in TD-CDMA;
  • the HSUPA system includes the following channels: HSUPA system physical layer 1 in uplink
  • the E-PUCH physical channel is used by the UE to transmit the CCTrCH of the E-DCH type to the NodeB.
  • E-RUCCH E-DCH random access uplink control channel
  • the E-RUCCH can be mapped to a random access physical channel resource and can share some resources with the existing PRACH.
  • the squat signaling channels E-AGCH and E-HICH are newly introduced.
  • the E-HCH is used to transmit the authorization information to the UE by the NodeB, and the E-HICH is used to carry the uplink E-DCH HARQ indication information.
  • the relationship flow of these channels is shown in Figure 4:
  • the UE initiates an upload request to the NodeB through the E-RUCCH;
  • the NodeB allocates the code channel resource to the UE by using the E-AGCH according to the content size, the cell capacity, and the interference of the UE;
  • the UE selects a corresponding rate matching manner, performs processing such as encoding the uploaded data, and uploads data through the E-PUCH.
  • the NodeB performs ACK/NACK feedback on the uploaded data through the E-HICH.
  • the present invention proposes to increase the minimum timing T1 (the first minimum time interval) between the scheduling request and the E-AGCH if the UE initiates the scheduling request, as shown in FIG. 5.
  • T1 the first minimum time interval
  • the relationship is as follows: If the UE initiates the scheduling request for the first time, the process of the UE initiating the E-RUCCH is the same as the PRACH. In order to prevent the UE from frequently searching for the E-AGCH, the power consumption of the UE is reduced, and at the same time, the Node B needs to upload according to the UE.
  • the value of the value is as follows: 1. Ensure that the Node ⁇ has enough time to process the authorization request information, and send the code channel and code channel power information from the E- AGCH to enable the UE to receive correctly. 2. Ensure the UE search cycle. Can not be too frequent, to avoid excessive power consumption; 3, T1 value should not be too large, otherwise it will affect efficiency and reduce the code rate.
  • the value can be determined in two ways: 1. The value range is variable, configured by the upper layer, and notified to the UE and the Node B through system wide or signaling; 2. The value is fixed, the UE and The Node B follows the fixed Tl.
  • the UE After receiving the E-AGCH, the UE encapsulates the MAC-es data packet according to the code channel and the time slot resource allocated by the Node B at the MAC-e layer, and performs physical layer processing such as coding.
  • the minimum time interval between E-AGCH and E-PUCH is T2 (the second minimum time interval;).
  • the value of the value is as follows: 1. Ensure that the UE has enough time to process (such as forming a MAC-e packet, encoding, etc.) after receiving the code channel and time slot resource information allocated by the Node B, and from the E-PUCH. Send, so that Node B receives correctly; 2.
  • the value of T2 should not be too large, otherwise it will affect efficiency and reduce the code rate.
  • the value can be determined in two ways: 1.
  • the value range is variable, configured by the upper layer, and notified to the UE and the Node B through system broadcast or signaling; 2.
  • the value is fixed, and the UE and the Node B comply with the fixed T2.
  • the Node B After receiving the E-PUCH, the Node B performs processing such as decoding at the physical layer, and performs unpacking and the like at the MAC-e. According to the result of the CRC (Cyclic Redundancy Check), the received data needs to be received by the E-HICH. The packet does an ACK/NACK response. Considering the processing time of the Node B, the minimum time interval between the E-PUCH and the E-HICH is T3 (the third minimum time interval;). The value of this value is as follows: 1. Ensure that the Node B has enough time to process (such as decoding, CRC check, etc.) after receiving the data packet sent by the UE (in E-PUCH), and ACK or NACK.
  • T3 the third minimum time interval
  • the E-HICH is sent to enable the UE to receive correctly.
  • the value of T3 cannot be too large. Otherwise, the efficiency will be affected and the code rate will be reduced by 4%.
  • the value can be determined in two ways: 1.
  • the value range is variable, configured by the upper layer, and the UE and the Node B are notified through the system wide or signaling; 2.
  • the value is fixed, and the UE and the Node B comply with the fixed T3.
  • the above timing relationship is applicable to scheduling and non-scheduled services.
  • the present invention will provide a timing relationship between channels of HSUPA technology in a time division code division multiple access system.
  • the process of the UE initiating the E-RUCCH is the same as the PRACH. To prevent the UE from frequently searching for the E-AGCH, the UE's work is reduced.
  • the minimum time between the UE to initiate new scheduling request information and E-AGCH The interval is Tl.
  • the value can be determined in two ways: 1.
  • the value range is variable and is configured by the upper layer.
  • the UE and the Node B are notified by the system broadcast or signaling, for example, the value range is Tl e [l, 21] Ts; 2.
  • the UE After receiving the E-AGCH, the UE encapsulates the MAC-es packet according to the code channel and the daily slot resource allocated by the Node B at the MAC-e layer, and performs physical layer processing such as encoding.
  • the minimum interval between E-AGCH and E-PUCH is Ts.
  • the value can be determined in two ways: 1.
  • the timing relationship between the E-PUCH and the HICH is T3; after receiving the E-PUCH, the Node B performs processing such as decoding in the physical layer, performs unpacking processing on the MAC-e, and needs to pass the E-HICH according to the result of the CRC. Make an ACK/NACK response to the received packet.
  • the minimum interval between E-PUCH and E-HICH is T3.
  • the value can be determined in two ways: 1.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de synchronisation des canaux entre eux dans un système TD-CDMA, ce procédé devant résoudre le problème que pose, avec la technique actuelle de synchronisation TD-CDMA, le fait que l'équipement utilisateur cherche fréquemment le canal E-AGCH et que la consommation électrique de l'équipement utilisateur est trop élevée, ce qui ne convient pas pour le système TD-CDMA. Pour résoudre ce problème, le procédé de l'invention consiste: 1) à ordonnancer la demande lancée par le terminal utilisateur aux extrémités de la station de base, et 2) après écoulement d'un premier intervalle de temps minimum, à établir un canal E-AGCH de liaison descendante entre le terminal utilisateur et la station de base. Cette invention, qui résout la relation de synchronisation entre chacun des canaux en technique HSUPA dans un système TD-CDMA, permet de les adapter à la structure de trame du TD-CDMA, évite que l'équipement utilisateur ne recherche trop fréquemment le canal E-AGCH et diminue le gaspillage d'électricité de l'équipement utilisateur, d'où une plus grande souplesse d'affectation et une utilisation totale de la ressource.
PCT/CN2006/003775 2006-08-18 2006-12-30 Procédé de synchronisation entre canaux dans un système td-cdma WO2008022502A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2006101114575A CN101128035B (zh) 2006-08-18 2006-08-18 时分码分多址系统中信道间的定时方法
CN200610111457.5 2006-08-18

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Cited By (3)

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US8283358B2 (en) 2008-09-05 2012-10-09 Elan Pharmaceuticals, Inc. N-sulfonamido polycyclic pyrazolyl compounds
US8363566B2 (en) 2008-10-24 2013-01-29 Zte Corporation Sending method and device for scheduling request (SR) signal
CN103795434A (zh) * 2010-10-21 2014-05-14 高通股份有限公司 促进td-scdma多载波系统中的上行链路同步

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CN101217298B (zh) * 2008-01-03 2011-08-24 中兴通讯股份有限公司 降低增强专用信道的绝对授权信道误码率的方法
CN101547498B (zh) * 2008-03-26 2012-10-10 展讯通信（上海）有限公司 一种tdd系统中cell_fach状态的上行接入方法
CN101677463B (zh) * 2008-09-18 2012-07-25 电信科学技术研究院 一种实现半持续物理资源分配的方法和装置
CN102316125B (zh) * 2010-06-29 2014-03-12 中兴通讯股份有限公司 一种td-scdma中hsupa物理层软件控制实现方法
CN104717677B (zh) * 2013-12-13 2018-03-23 中国移动通信集团山西有限公司 共址基站的td‑lte帧配置方法及装置
US10893551B2 (en) * 2017-03-11 2021-01-12 Qualcomm Incorporated Numerology dependent communication timing

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
US8283358B2 (en) 2008-09-05 2012-10-09 Elan Pharmaceuticals, Inc. N-sulfonamido polycyclic pyrazolyl compounds
US8363566B2 (en) 2008-10-24 2013-01-29 Zte Corporation Sending method and device for scheduling request (SR) signal
CN103795434A (zh) * 2010-10-21 2014-05-14 高通股份有限公司 促进td-scdma多载波系统中的上行链路同步

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