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Data transmission method, system and equipment in relay system

A data transmission method and a technology of a relay system, which are applied in the field of systems and equipment, and data transmission methods, and can solve problems such as large uplink Backhaul link overhead

Active Publication Date: 2013-04-10
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a data transmission method, system, and device in a relay system to solve the problem of a large uplink Backhaul link overhead when the RN reports the channel quality information of two-hop users to the eNB

Method used

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  • Data transmission method, system and equipment in relay system
  • Data transmission method, system and equipment in relay system
  • Data transmission method, system and equipment in relay system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like image 3 As shown, it is a schematic diagram of the steps of the method for transmitting data in the relay system in Embodiment 1 of the present invention. The relay system of the present invention includes an eNB, at least one RN and multiple UEs, and each UE accesses a node (eNB or RN ), said method comprises the following steps:

[0039] Step 101: Each RN performs PF scheduling on the terminals accessing itself according to the channel quality information fed back by the two-hop users, and determines the resource block corresponding to each resource block in the Access Zone from the terminals accessing itself according to the PF scheduling result. terminal.

[0040] The channel quality information fed back by the two-hop users can be MCS information that can reflect the quality of the downlink Access link from the RN to the UE, and each RN can also simultaneously determine the MCS of the terminal corresponding to each resource block on the resource block; the t...

Embodiment 2

[0086] Embodiment 2 of the present invention illustrates the solution of Embodiment 1 of the present invention through specific examples. Assume that the architecture between the devices in Embodiment 2 of the present invention is as follows Figure 4 As shown, the cell includes an eNB, 2 RNs, and 9 UEs, among which, UE1~UE4 are one-hop users accessing the eNB, UE5 and UE6 are two-hop users accessing RN_1, and UE7~UE9 are accessing RN_2 two-hop users. Using the solution of Embodiment 1 of the present invention to perform data transmission includes the following process:

[0087] Step 1: RN_1 performs PF scheduling on UE5 and UE6 according to the channel quality information fed back by UE5 and UE6, determines the terminal corresponding to each resource block in the Access Zone from UE5 and UE6, and obtains the scheduling for RN_1 shown in Table 2 The result table (AZ_RN_1_TABLE), wherein, RB_idx indicates the index number of the resource block in the Access Zone, UE_ID indica...

Embodiment 3

[0130] like Figure 5 As shown, Embodiment 3 of the present invention also provides a data transmission system, the system includes: a base station eNB 11 and at least one relay node RN 12, wherein: the eNB 11 is used to perform PF scheduling for terminals accessing itself, according to PF scheduling results, determine the terminal corresponding to each resource block in the Access Zone and the MCS of the terminal on the corresponding resource block from the terminal accessing itself, and determine the MCS corresponding to each resource block reported by the RN. Convert to PF scheduling factor, and determine the terminal with the largest PF scheduling factor corresponding to each resource block, and transmit data to the terminal with the largest PF scheduling factor corresponding to the resource block through each resource block; RN 12 is used to access itself The terminal performs PF scheduling, and according to the PF scheduling result, determines the terminal corresponding ...

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Abstract

The invention discloses data transmission method, system and equipment in a relay system. An eNB and an RN (Relay Node) are respectively butted to UE (User Equipment) per se to carry out PF (Proportional Fair) dispatching, each RN only needs to report a terminal mark of each terminal corresponding to a resource block and an MCS (modulation and coding scheme) of the corresponding terminal in the resource block subjected to PF dispatching to the eNB, and the eNB can fairly distribute resources to all the UE, thereby reducing the resource expense of an uplink Backhaul link.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data transmission method, system and equipment in a relay system. Background technique [0002] In a relay cellular communication system, the introduction of a relay node (Relay Node, RN) effectively improves the performance of cell edge users, thereby achieving the purpose of improving the overall system performance and increasing cell coverage. figure 1 It is a schematic diagram of the connection between devices in the Relay system, such as figure 1 As shown, a cell includes a base station (eNB), one or more relay nodes (RN) and multiple terminals (UE), and each UE accesses the eNB or RN according to a certain access algorithm. A UE that directly communicates with the eNB is called a one-hop user, and a UE that needs to communicate with the eNB through the RN is called a two-hop user. The transmission link between the eNB and the RN is a backhaul (Backhaul) link, wherein t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/16H04W88/08
Inventor 曾华承范斌郑侃沈晓冬刘光毅
Owner CHINA MOBILE COMM GRP CO LTD