Method for configuring relay link resources, base station and system

一种中继链路、资源配置的技术，应用在通信领域，能够解决偏移量增大、偏移量中继链路资源减少、资源浪费等问题，达到偏移量减小、增加中继链路资源、降低资源浪费的效果

Active Publication Date: 2011-03-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] After the RN frame is offset relative to the eNB frame, the resource used on the relay link (relay_physical downlink data channel R_PDSCH) is: total subframe length-the offset of the RN frame relative to the eNB frame-relay_physical downlink control Channel R_PDCCH-second idle time 3; in this method, the relay link resources are reduced due to the excessive offset of the RN frame relative to the eNB frame; in addition, the eNB defaults that the PDCCH length of the MBSFN subframe where the relay link of the RN is located is The maximum value (2 OFDM symbols), which further increases the offset of the RN frame relative to the eNB frame, further reduces the relay link resources, and resources are wasted

Method used

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  • Method for configuring relay link resources, base station and system
  • Method for configuring relay link resources, base station and system
  • Method for configuring relay link resources, base station and system

Examples

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Embodiment 1

[0034] refer to figure 2 , which shows a flow chart of Embodiment 1 of a method for configuring relay link resources provided by an embodiment of the present invention. The flow of the method for configuring relay link resources includes:

[0035] S101: Receive the number of OFDM symbols reported by the relay station RN, and the OFDM symbols are used by the physical downlink control channel PDCCH of the MBSFN subframe of the multimedia multicast broadcast single frequency network where the relay link of the RN is located.

[0036] In practical applications, the number of OFDM symbols used by the PDCCH of the MBSFN subframe where the RN's relay link is located can be 1 or 2, and the RN can report to the eNB the number of OFDM symbols used by the PDCCH of the MBSFN subframe where the RN's relay link is located. Before the number of OFDM symbols, the PDCCH length of the RN is set to 2 OFDM symbols, and the number of OFDM symbols (2) used by the PDCCH after setting is reported wh...

Embodiment 2

[0080] refer to Figure 4 , showing the flow chart of Embodiment 2 of the method for configuring relay link resources provided by the embodiment of the present invention, as shown in Figure 4 As shown, the process of the method for configuring relay link resources includes:

[0081] S201: The RN reports to the eNB the number of OFDM symbols used by the PDCCH of the MBSFN subframe where the relay link of the RN is located.

[0082] Before the RN reports to the eNB the number of OFDM symbols used by the PDCCH of the MBSFN subframe where the RN's relay link is located, the RN may set the number of OFDM symbols used by the PDCCH of the MBSFN subframe where the RN's relay link is located to 2, The number of OFDM symbols (2) used by the configured PDCCH is reported when the RN initially accesses.

[0083] Alternatively, the RN may not set the number of OFDM symbols used by the RN's PDCCH, and report the number of OFDM symbols actually used by the RN's PDCCH to the eNB. The report...

Embodiment 3

[0124] refer to Figure 5 , which shows the flow chart of Embodiment 3 of the method for increasing relay link resources provided by the embodiment of the present invention, as shown in Figure 5 As shown, the process of the method for configuring relay link resources includes:

[0125] S301: The RN reports to the eNB the number of OFDM symbols used by the PDCCH of the MBSFN subframe where the relay link of the RN is located.

[0126] S301 is similar to S201, and will not be described too much here, and may refer to S201.

[0127] S302: According to the number of OFDM symbols used by the PDCCH of the MBSFN subframe where the RN's relay link is located and the interference between adjacent RNs reported by the RN, the eNB determines the number of OFDM symbols used by the PDCCH of the MBSFN subframe where the RN's relay link is located. Configure the number of OFDM symbols.

[0128] S302 is similar to S202, and will not be described too much here, and may refer to S202.

[01...

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Abstract

The embodiment of the invention provides a method for configuring relay link resources, base station and system. The embodiment of the method for configuring relay link resources comprises the following steps of: receiving number of OFDM (Orthogonal Frequency Division Multiplexing) symbols reported by an RN (Relay Station), wherein the OFDM symbols are used by a PDCCH (Physical Downlink Control Channel) in an MBSFN (Multimedia Broadcast Single Frequency Network) subframe for the relay link of the RN; and configuring relay link resources according to the number of OFDM symbols, offset of an RN frame with respect to time of initial synchronization between the RN frame and an eNB (evolutional node B) frame, and length of a PDCCH in an eNB subframe, wherein the offset is less than the sum of length of the PDCCH in an MBSFN subframe for the relay link of the RN and the first idle time. The embodiment of the invention increases relay link resources and reduces waste of resources.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a relay link resource configuration method, base station and system. Background technique [0002] With the development of wireless communication technology, there are higher requirements for communication rate and communication quality. After the 3GPP LTE-Advanced standard introduces the relay station (RN, Relay Node), this problem is effectively solved by using RN for backhaul transmission, and RN It is also possible to expand the coverage of the cell, increase the capacity of the cell, and equalize the throughput of the cell. [0003] When the RN is used as a network node for cell coverage, the RN communicates with a base station (eNB, Evolved Node Base station) and a user equipment (UE, User Equipment) under its coverage in a time-division manner. In order to ensure that the UE under the Release-8 standard is not affected when accessing the network, the subfra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12H04W88/08
CPCH04W84/047H04L5/0007H04W72/04H04B7/155H04L5/0053
Inventor 栗忠峰
Owner HUAWEI TECH CO LTD
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