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Method and equipment for determining transmission scheme in coordinated multi-point(comp) transmission system

A transmission scheme and transmission system technology, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve problems such as not supporting single-point switching

Active Publication Date: 2013-12-25
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In the LTE / E-UTRAN system, each mobile station does not support the switching of the single point (SP) transmission scheme (see reference [2] [3]), and the CoMP transmission technology discussed in the current LTE-A does not involve the transmission Scheme switching mechanism, including SP / CoMP switching, switching between various CoMP schemes, and feedback to support frequency selective scheduling, etc.

Method used

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  • Method and equipment for determining transmission scheme in coordinated multi-point(comp) transmission system
  • Method and equipment for determining transmission scheme in coordinated multi-point(comp) transmission system
  • Method and equipment for determining transmission scheme in coordinated multi-point(comp) transmission system

Examples

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no. 1 example

[0045] [First embodiment: report channel-related information of the transmission scheme designated by the base station]

[0046] figure 2 It shows a signal flow diagram of a method for determining a transmission scheme in a CoMP transmission system according to the first embodiment of the present invention.

[0047] In this embodiment, the serving base station 10 sends the report type designation signaling to the mobile station 20 through the downlink control channel, and the signaling instructs the mobile station to report the channel related information of the transmission scheme designated by the serving base station.

[0048] In order to support downlink CoMP transmission, the serving base station and the mobile station first negotiate the capabilities of the supported CoMP transmission scheme. This can be done when the mobile station enters the base station area or when the mobile station starts to register, or at other times.

[0049] In addition, the mobile station 20 also need...

example 1

[0052] [Example 1]: Specify one or more single point (SP) transmission schemes

[0053] Through the downlink control channel, the serving base station 10 designates the mobile station 20 to report channel-related information of one or more SP transmission schemes. The report of the single-point transmission scheme can be used as the default setting of the system without the need for the serving base station to specify through signaling. This scheme is the same as the existing system.

[0054] The mobile station 20 calculates broadband or all subband channel-related information in step S103 according to the designated SP transmission scheme.

[0055] Then, at step S104, the mobile station 20 feeds back the channel related information calculated according to the designated SP transmission scheme to the serving base station 10 in a corresponding format.

[0056] The content of the feedback may include channel-related information on broadband or M preferred subbands. When the channel-rel...

example 2

[0060] [Example 2]: Specify one or more CoMP transmission schemes

[0061] Assuming that through the downlink control channel, the serving base station 10 designates the mobile station 20 to report channel-related information of one or more CoMP transmission schemes, such as channel-related information of global precoding JT. The specified CoMP transmission scheme must be a negotiated and supportable transmission scheme.

[0062] In step S103, the mobile station 20 assumes that the global precoding JT transmission scheme is adopted on the broadband or all subbands, and calculates the channel-related information in the CoMP measurement set.

[0063] The mobile station 20 can also estimate the downlink channels of the cells in the CoMP measurement set, and determine the corresponding CoMP cooperating set, that is, selecting some or all of the base stations from the measurement set to form the CoMP cooperating set, and then calculating the CoMP cooperating set using the global Channel-...

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Abstract

The present invention provides a method and equipment for determining transmission scheme in Coordinated Multi-Point (CoMP) transmission system. The method includes the following steps: a service base station transmits report type indication signaling to a mobile station, and appoints candidate transmission schemes; based on the report type indication signaling, the mobile station calculates and reports downlink channel relative information in CoMP measurement group of at least one candidate transmission scheme of appointed candidate transmission schemes; based on the channel relative information reported by the mobile station, the service base station determines the transmission scheme to be adopted; and the service base station notifies the determined transmission scheme to the mobile station. By the method and equipment of the present invention, the switch supporting multiple transmission schemes can be provided and the feedback of frequency selective schedule in the existence of multiple transmission schemes can be supported.

Description

Technical field [0001] The present invention relates to a coordinated multi-point (CoMP, Coordinated Multi-Point) system, and in particular to a method and a device for determining transmission in a coordinated multi-point (CoMP) transmission system through negotiation between a mobile station and a base station Program. Background technique [0002] Now, coordinated multipoint CoMP transmission is widely used in 3GPP 36.814 as a candidate method to improve the link performance of the LTE-advanced system (see reference [1]). Such as figure 1 As shown, the general concept of coordinated multipoint transmission is to use the antenna sites (or base stations) connected by the backbone network to work together to serve the mobile station. Several adjacent antenna stations or base stations serve one mobile station at the same time, thereby improving the mobile station. Data rate. [0003] For the LTE-A system, the CoMP transmission scheme is considered as a method to increase data rate...

Claims

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Application Information

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IPC IPC(8): H04W72/14H04W28/16
CPCH04W72/0406H04W72/085H04W72/542H04W72/20
Inventor 宋扬刘皓杨红卫
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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