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Base station interaction method and device

A technology for base stations and interactive information, applied in data exchange networks, digital transmission systems, wireless network protocols, etc., can solve problems such as delays that cannot meet requirements

Inactive Publication Date: 2012-05-16
深圳市恒程汇文化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To realize multi-node cooperative transmission, CoMP technology needs to exchange more data through the X2 interface than in the non-cooperative mode. In addition to the original handover related information, there is also the data of the downlink channel matrix fed back by the UE. These downlink channel matrices The data needs to be quickly exchanged between the base station of the serving cell and the base station of the cooperative cell. If the data is exchanged through the existing X2 interface of the LTE system, the delay is difficult to meet the requirements.

Method used

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Examples

Experimental program
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Embodiment 1

[0033] This example is based on the figure 2 Implementation scheme of CS / CB transmission mode under the downlink LTE-A system. The base station information interaction process is that UE1 will measure and obtain the channel matrix H 11 and H 12 Feedback to eNB1, eNB1 will H 12 Interact with eNB2; similarly, UE2 will measure the channel matrix H 21 and H 22 Feedback to eNB2, eNB2 will H 21 Interact with eNB1. eNB1 utilizes H 11 and H 21 Calculate the optimal precoding matrix W 1 , eNB2 utilizes H 22 and H 12 Calculate the optimal precoding matrix W 2 . eNB1 then sets W 1 Interact with eNB2, and eNB2 sends W 2 Interact with eNB1 for calculating their respective CQIs.

[0034] Figure 4It is a schematic diagram of the interactive system in this embodiment. Each interactive base station is added with a GE network port, and the network port is connected to the core network through a switch with a network cable.

[0035] Figure 5 is a schematic diagram of informa...

Embodiment 2

[0046] The interaction method of Embodiment 2 is exactly the same as that of Embodiment 1, but the physical connection method of the interactive system is different, as shown in the attached Figure 7 As shown, the data interaction of calling the Socket interface function proposed by the present invention for IP-based transmission is directly implemented on the physical interface of the X2 interface without additional GE network ports. That is, the direct interaction based on IP transmission proposed by the present invention and the existing X2 protocol-based interaction in LTE share the same physical interface.

[0047] In the scenario of non-cooperative transmission mode, when the handover of the connected UE in the LTE access system is performed in the same MME, the handover process does not involve the change of MME and S-GW.

[0048] In this interaction scenario, the interaction information required for switching can be interacted through the original X2 interface protoco...

Embodiment 3

[0051] Embodiment 3 is based on the attached figure 2 The implementation scheme of the CS / CB transmission mode of the downlink LTE-A system shown. The difference is that Embodiment 3 realizes the connection and interaction of adjacent base stations through the ATM (Asynchronous Transfer Mode, asynchronous transfer) interface, and the interface also includes a physical interface that can directly transmit based on the transport layer below, Figure 9 It is a schematic diagram of the interactive system of Embodiment 3, the adjacent base stations are connected to the ATM network through the ATM switch, and the interactive data is realized through the ATM network based on the data link layer.

[0052] Figure 10 It is an interactive flowchart of the channel matrix and the optimal precoding matrix in this embodiment, and the specific process includes the following steps:

[0053] Step A01: Each base station determines the interaction set according to the channel matrix fed back ...

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Abstract

The invention discloses a base station interaction method and device. The method comprises the following steps of: processing base station interaction information on an MAC (Media Access Control) layer by a communication system, and then interacting the processed base station interaction information through an interface which is physically connected with a network layer or a data link layer. With the adoption of the base station interaction method and device, smaller interaction time delay can be obtained so as to meet more requirements on a system and a transmission scene.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a base station interaction method and device supporting coordinated multi-point transmission operations. Background technique [0002] The LTE (Long Term Evolution, long-term evolution) project is the evolution of 3G. It improves and enhances the 3G air access technology, using OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) and MIMO (Multiple-Input Multiple-Output, Multiple Input Multiple Output) as the basic technology of its wireless network evolution. The overall architecture of the LTE system is attached figure 1 shown. The access network part is composed of eNBs (evolvedNodeB, evolved base station). The eNBs are interconnected through the X2 interface, and each eNB is connected to the EPC (Evolved Packet Core, evolved packet core network) through the S1 interface. To be precise, through the S1- The MME interface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/08H04L1/00H04W80/02H04W80/04H04W92/20
CPCH04W92/20
Inventor 黄双红王文焕卢有雄刘敏
Owner 深圳市恒程汇文化科技有限公司
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