WO2008098474A1 - Procédé et dispositif de fusion de diversité de macro de liaison ascendante dans un système de communication - Google Patents

Procédé et dispositif de fusion de diversité de macro de liaison ascendante dans un système de communication Download PDF

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Publication number
WO2008098474A1
WO2008098474A1 PCT/CN2008/000270 CN2008000270W WO2008098474A1 WO 2008098474 A1 WO2008098474 A1 WO 2008098474A1 CN 2008000270 W CN2008000270 W CN 2008000270W WO 2008098474 A1 WO2008098474 A1 WO 2008098474A1
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WO
WIPO (PCT)
Prior art keywords
data packet
base station
quality
radio network
sent
Prior art date
Application number
PCT/CN2008/000270
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English (en)
Chinese (zh)
Inventor
Chunfeng Cui
Feifei Lou
Zhi Rui
Yuhong Huang
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China Mobile Communications 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.)
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Publication date
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Publication of WO2008098474A1 publication Critical patent/WO2008098474A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection

Definitions

  • the invention relates to an uplink macro diversity combining method and implementation device in a mobile communication system, in particular to an uplink macro diversity combining method and implementation device suitable for a flat communication network architecture and a traditional communication network architecture, and belongs to the technical field of communication. Background technique
  • UMTS Universal Mobile Telecommunications System
  • UE User Equipment
  • the UE establishes a connection with the new cell, that is, soft handover, before disconnecting the old cell. Therefore, in soft handover, the UE communicates with at least two base stations (Node Bs) involved in handover, in order to improve the quality of signal communication when the UE is in handover, and to maintain data loss during handover, UE and universal mobile
  • Node Bs base stations
  • UTRAN The UMTS Terrestrial Radio Access Network separately divides signals from a plurality of base stations, and this technique is called macro diversity.
  • CDMA Code Division Multiple Access
  • a connection is established with two or more base stations, that is, an uplink macro diversity set is required, and the handover is performed.
  • the area occupies a considerable proportion of the entire network coverage, generally 30% to 40% of the project, so how to carry out the uplink macro-diversity collection is very important to the network.
  • the following is a description of the upstream macro diversity sets in several different scenarios.
  • the uplink macro diversity in the traditional UMTS architecture and, for example, the signal transmitted by the UE in the uplink is received by several (for example, two) base stations, and is demodulated and forwarded to the radio network controller (Radio Network Controller).
  • RNC Radio Network Controller
  • RNC combines two channels of data, that is, the uplink macros are combined to improve the quality of the uplink signal, as shown in Figure 1.
  • the base station performs uplink macro diversity combining.
  • the base station 11 and the base station 12 are respectively used to indicate the base station where the UE camps and other base stations in the active set, and the data packets sent by the UE received by the base station 11 and the base station 12 are respectively referred to as the first data packet and the first data packet. Two packets.
  • the first method is: sending a notification to the base station 11, specifically: when the Cyclic Redundancy Code (CRC) of the first data packet received by the base station 11 is correct, as shown in FIG. 3 (The solid line indicates the data flow, the dotted line indicates the signaling flow, and the following application structure diagram adopts the same representation).
  • CRC Cyclic Redundancy Code
  • the base station 11 directly forwards the first data packet to the core network device, ignoring the notification message sent by the base station 12; When the CRC check error of the first data packet received by the base station 11 is as shown in FIG.
  • the base station 11 waits for the base station 12 to send an advertisement message, and after receiving the announcement message sent by the base station 12, selects a base station 12 to request it.
  • the received data packet is forwarded, and the selected base station 12 transmits the data packet to the base station 11.
  • the second method the base station 11 sends an indication, specifically: when the CRC check of the first data packet received by the base station 11 is correct, as shown in FIG. 5, the base station 11 forwards the first data packet directly to the core.
  • the network device sends an indication message to all base stations 12 in the active set to prevent them from transmitting data packets to the base station 11; when the CRC check error of the first data packet received by the base station 11 is incorrect, as shown in FIG. 6, the base station 11 does not
  • the indication message is sent, waiting for the base station 12 to send a data packet to it, and after the internal preset timer expires, the base station 12 sends all the second data packets received by the base station 12 to the base station 11.
  • the base station 11 when the base station 11 receives the good quality data packet, the base station 12 still sends signaling to the base station 11.
  • the base station 11 when the base station 11 receives the good quality data packet, the base station 11 still sends the base station 11 to the base station 12. Signaling is sent, and when the base station 11 receives a bad quality data packet, there is also a waiting delay of the base station 12, which greatly increases the traffic and communication delay between the base station 11 and the base station 12, which is equivalent to Reduced system capacity. Summary of the invention It is an object of the present invention to provide an uplink macro diversity combining method that ensures efficient combining of uplink macrodiversity data while minimizing traffic between base stations and/or RNCs caused by macrodiversity.
  • Another object of the present invention is to provide an apparatus for uplink macrodiversity and implementation that ensures efficient combining of uplink macrodiversity data while minimizing traffic between base stations and/or RNCs caused by macrodiversity.
  • the present invention provides an uplink macro diversity combining method in a mobile communication system.
  • the method includes the following steps: The first base station receives the first data packet sent by the UE, and performs quality check. The first data packet is sent to the core network device if the quality check is passed; the second base station not associated with the user equipment performs signaling and data interaction.
  • the method further includes: if the first base station fails the quality check of the first data packet, the first base station sends the notification information to the second base station associated with the UE, where The second base station performs quality check on the received second data packet sent by the UE, and if the quality check passes, sends the second data packet to the first base station, where the first base station receives the first data packet.
  • the two packets are merged and sent to the core network device.
  • the method further includes: if the quality verification of the first data packet by the first base station fails, the first base station sends, by using the first RNC, a second base station associated with the UE Announcement information, the second base station performs quality check on the received second data packet sent by the UE, and if the quality detection face passes, sends the second data packet to the first RNC, where An RNC merges the received second data packet and sends it to the core network device.
  • the method further includes: if the first base station fails the quality check of the first data packet, the first base station passes the first RNC and the The second RNC to which the second base station belongs sends the advertisement information to the second base station, and the second base station performs the quality check on the received second data packet sent by the UE, and if the quality check is passed, Sending, by the second RNC, the second data packet to the first RNC, where the first The RNC combines the received second data packets and sends them to the core network device.
  • the present invention does not have any signaling interaction between the base stations, which significantly reduces the network load. Even if the first base station receives the poor quality data packet, it only needs to add one signaling to all the second base stations, and only the second base station that receives the good quality data packet sends the data to the first base station, which It is still superior to the traditional uplink macro diversity method. Since the number of second base stations in the active set is usually not large in the actual network, the data and signaling required to be transmitted between the second base station and the first base station are also combined in the case where the first base station receives the data packet of poor quality. Not a lot.
  • a base station usually, has a good channel quality, and the probability that it receives a good quality data packet is relatively large, that is, in most cases, the uplink macro diversity combining method provided by the present invention does not increase the network. Any data and signaling load, such that at an average level, the present invention reduces the amount of information that needs to be transmitted between the first base station and the second base station, thereby increasing the capacity of the system.
  • FIG. 1 is a schematic diagram of an application structure of an uplink macro diversity set in the prior art.
  • FIG. 7 is a flowchart of an uplink macro diversity combining method in a mobile communication system according to the present invention.
  • FIG. 8 is a schematic diagram of an application structure of an uplink macro diversity combining method applied to a flattened communication network architecture in a mobile communication system according to the present invention.
  • FIG. 9 is a schematic diagram of still another application structure of an uplink macro diversity combining method in a mobile communication system according to the present invention applied to a flattened communication network architecture.
  • FIG. 10 is still another flow chart of the uplink macro diversity combining method in the mobile communication system provided by the present invention.
  • FIG. 11 is a schematic diagram of an application structure of an uplink macro diversity combining method applied to a traditional communication network architecture in a mobile communication system according to the present invention.
  • FIG. 12 is a schematic diagram of still another application structure of an uplink macro diversity combining method applied to a traditional communication network architecture in a mobile communication system according to the present invention.
  • FIG. 13 is a schematic diagram of an uplink macro diversity combining method in a mobile communication system provided by the present invention.
  • FIG. 14 is a schematic diagram of an uplink macro diversity set and device implementation according to the present invention. detailed description
  • the base station 11 and the base station 12 respectively represent user equipments in each figure.
  • the base station in which the UE resides and other base stations in the active set, and the data packets sent by the UE received by the base station 11 and the base station 12 are referred to as a first data packet and a second data packet, respectively.
  • the method includes the following steps:
  • the base station 11 receives the first data packet sent by the UE, and performs quality check. If the quality check occurs, the first data packet is sent to the core network device.
  • the quality inspection face can be implemented in a variety of ways, and those skilled in the art can implement the quality inspection based on the present invention and the prior art.
  • the quality check is performed to check quality measurement information in the data packet.
  • the shield measurement information includes a CRC and a quality estimate (QE) value in the data packet.
  • QE quality estimate
  • the method of the prior art can be used to perform uplink macro diversity combining.
  • the base station 11 is further included. If the quality check of a data packet fails, or the base station 11 does not receive the first data packet sent by the UE within the set duration, the base station 11 sends the notification information to the base station 12 associated with the UE. The base station 12 performs quality check on the received second data packet sent by the UE, and if the quality check passes, sends the second data packet to the base station 11, and the base station 11 receives the second data packet. The packets are merged and sent to the core network device.
  • the merging is specifically performing selective merging of the second data packet according to a QE value.
  • selective merging refers to selecting one way from the received data as the combined output.
  • the base station 11 receives the UE Sending the first data packet, and performing quality check. If the quality check is passed, the first data packet is sent to the core network device through the RNC 21 to which the base station 11 belongs.
  • the quality inspection can be implemented in a variety of ways, and those skilled in the art can implement the quality inspection based on the present invention and the prior art.
  • the quality check is specifically: checking quality measurement information in the data packet.
  • the quality measurement information includes a CRC and a quality estimate (QuaE ty Es t ima te , a cartridge QE) value in the data packet.
  • the uplink macro diversity set can be performed by using the method in the prior art.
  • the base station 11 is further included. If the quality check of the first data packet fails, or the base station 11 does not receive the first data packet sent by the UE within the set duration, the base station 11 passes through the RNC 21 to associate with the UE. The base station 12 sends the advertisement information, and the base station 12 performs quality check on the received second data packet sent by the UE, and if the quality check passes, sends the second data packet to the RNC 21, the RNC 21 The received second data packet is combined and sent to the core network device.
  • the merging is specifically performing selective merging of the second data packet according to a QE value.
  • selective merging refers to selecting from several data received. Choose one way as the combined output.
  • the base station 11 is further included. If the quality of the first data packet does not pass, or the base station 11 does not receive the first data packet sent by the UE within the set duration, the base station 11 passes the RNC 21 and the base station 12 The RNC 22 sends the advertisement information to the base station 12, and the base station 12 performs quality check on the received second data packet sent by the UE, and sends the second data packet through the RNC 22 if the quality check passes. And sending, by the RNC 21, the received second data packet to the core network device.
  • the present invention further provides an apparatus for implementing uplink macro diversity in a mobile communication system, and a schematic structural diagram thereof is shown in FIG. 14, including: a data packet The receiving storage module 31, the packet quality detecting module 32, and the data packet uploading module 33; wherein:
  • a data packet receiving and storing module 31 configured to receive and store a data packet sent by the user equipment, and a data packet quality detecting module 32, configured to perform quality verification on the data packet sent by the user equipment; Packet upload module 33;
  • the data packet uploading module 33 is configured to send the data packet stored in the data packet receiving storage module 31 to the core network device.
  • the uplink macro diversity combining and implementing apparatus further includes: a first data packet interaction module 34; and when the data packet quality detecting module 32 fails to pass the quality detection of the data packet sent by the user equipment, notifying the first data packet Interaction module 34;
  • the first data packet interaction module 34 is configured to acquire a data packet from another base station or a radio network controller, store the data packet in the data packet receiving storage module 31, and return a notification to the data packet quality detecting module 32.
  • the packet quality detection module 32 is further configured to: after receiving the notification response, send a notification to the first data packet uploading module.
  • the uplink macro diversity combining and implementing apparatus further includes:
  • the second data packet interaction module 35 is configured to receive the data packet request initiated by the other base station or the radio network controller, and notify the data packet quality detecting module 32 to perform quality detection on the locally received data packet, and when the quality detection is passed, the local data packet is detected.
  • the stored data packets are sent to the other base station or radio network controller.
  • the uplink macro-diversity and implementation device provided by the present invention may be disposed in a first base station where the user equipment resides and a second base station associated with the user equipment, and the uplink macro diversity set provided by the present invention is implemented in conjunction with the accompanying drawings. The working principle of the device and the signaling and data interaction process are described in detail.
  • the local data packet quality detecting module 32 performs quality check. If the quality check passes, the local data packet uploading module 33 is notified. The received first data packet is sent to the core network device; the second base station not associated with the user equipment performs signaling and data interaction.
  • the packet quality detection module 32 in the first base station fails the quality check of the first data packet, sending a notification to the first data packet interaction module 34 in the first base station;
  • the first data packet interaction module 34 in the first base station After receiving the notification, the first data packet interaction module 34 in the first base station sends the notification information to the second data packet interaction module 35 in the second base station;
  • the second data packet interaction module 35 in the second base station After receiving the advertisement information sent by the data packet interaction module 34 in the first base station, the second data packet interaction module 35 in the second base station notifies the data packet quality detection module 32 in the second base station to send the The second data packet received by the second base station is performed, and the quality detection is performed. When the quality detection is passed, the second data packet stored in the data packet receiving storage module 31 of the second base station is obtained, and sent back to the first base station.
  • the data packet interaction module 34 in the first base station After receiving the second data packet sent back by the second data packet interaction module 35 in the second base station, the data packet interaction module 34 in the first base station is stored in the data packet receiving storage module 31 in the first base station, and The packet quality detecting module 32 in the first base station returns a notification response; After receiving the notification response, the packet quality detecting module 32 in the first base station notifies the packet uploading module 33 in the first base station to acquire the second data packet from the data packet receiving storage module 31 in the first base station. Core network equipment.
  • the present invention can be applied to a flat communication network architecture and a conventional communication network architecture, and can be further applied to the case where the base station 11 and the base station 12 belong to the same RNC and different RNCs in the conventional communication network architecture.
  • the uplink macro diversity combining method in the mobile communication system provided by the present invention can alleviate the network load caused by the macro diversity and increase the network system capacity.

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

Abstract

L'invention concerne un procédé de fusion de diversité de macro de liaison ascendante dans un système de communication, dans un processus de transfert lisse. Selon le procédé, la première station de base reçoit le premier paquet de données envoyé depuis un appareil utilisateur et réalise un contrôle de qualité; si le contrôle de qualité est positif, la première station de base ou le premier RNC de la station de base envoie le premier paquet de données à un appareil réseau central; et la première station de base ne réalise pas de communication de signalisation ou de données avec la deuxième base de données associée à l'appareil utilisateur. L'invention permet de réduire considérablement la charge réseau et la quantité d'informations nécessaires entre les stations de base et/ou les RNC, et donc d'augmenter la capacité système.
PCT/CN2008/000270 2007-02-09 2008-02-02 Procédé et dispositif de fusion de diversité de macro de liaison ascendante dans un système de communication WO2008098474A1 (fr)

Applications Claiming Priority (2)

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CN200710063785.7 2007-02-09
CN2007100637857A CN101242209B (zh) 2007-02-09 2007-02-09 移动通信系统中上行宏分集的处理方法

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CN103379566B (zh) * 2012-04-12 2016-06-22 中兴通讯股份有限公司 宏分集数据自适应处理方法及装置
CN104168611B (zh) * 2014-08-07 2018-07-13 上海华为技术有限公司 通信数据处理方法及装置

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US5539749A (en) * 1993-09-13 1996-07-23 Siemens Aktiengesellschaft Method for merging data streams
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CN1578190A (zh) * 2003-07-25 2005-02-09 埃沃柳姆公司 上行宏分集方法
CN1607844A (zh) * 2003-10-16 2005-04-20 华为技术有限公司 移动通信系统宏分集合并方法

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US5774814A (en) * 1996-03-22 1998-06-30 Cornell Research Foundation, Inc. Multiply-detected macrodiversity method and system for wireless communications
CN101174684B (zh) * 2006-11-02 2010-12-22 比亚迪股份有限公司 电池正极和使用该正极的锂离子电池及它们的制备方法

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US5539749A (en) * 1993-09-13 1996-07-23 Siemens Aktiengesellschaft Method for merging data streams
CN1168757A (zh) * 1994-12-08 1997-12-24 艾利森电话股份有限公司 数字移动无线通信系统中的上行链路宏分集方法和设备
CN1578190A (zh) * 2003-07-25 2005-02-09 埃沃柳姆公司 上行宏分集方法
CN1607844A (zh) * 2003-10-16 2005-04-20 华为技术有限公司 移动通信系统宏分集合并方法

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CN101242209B (zh) 2011-09-21

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