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Subframe configuration method and device

A frame configuration and backhaul subframe technology, applied in the field of communication, can solve problems such as cellular communication and LS wireless device communication interference

Inactive Publication Date: 2013-11-13
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current related art, the base station does not configure the backhaul subframe and access subframe used by the backhaul link and the access link, which may cause interference between cellular communication and LS wireless device communication

Method used

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  • Subframe configuration method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] In this embodiment, there is cooperative transmission between the LS wireless device and the eNB. When performing cooperative transmission between the LS wireless device and the eNB, for example, the UE receives the PDCCH from the first few symbols of the eNB, and then receives the PDSCH from the LS wireless device. At this time, in order to ensure that the data of the eNB and the LS wireless device arrive at the same time On the UE side, the transmission between the LS wireless device and the eNB must be performed according to strict downlink timing. For example, taking the example that the distance between UE and eNB is greater than the distance between UE and LS wireless device, in order to ensure that UE can receive data from eNB and LS wireless device at the same time, LS wireless device needs to adjust its transmission timing, That is, it is later than eNB (T Pd -T Pa ) to emit.

[0093] On the premise that the LS wireless device does not send PDCCH for its sub...

Embodiment 2

[0108] In this embodiment, there is cooperative transmission between the LS wireless device and the eNB.

[0109] On the premise that the LS wireless device does not send PDCCH for its subordinate UEs on the access link and the LS wireless device receives the PDCCH from the base station on the backhaul link:

[0110] The transmission and reception switching of the LS wireless device occupies the last OFDM symbol of the access subframe, and the transmission and reception switching of the LS wireless device occupies the first OFDM symbol of the access subframe. In this case, the backhaul subframe configuration of the LS wireless device is a complete subframe, that is, the start position of the first slot of the backhaul subframe under the normal CP is the first OFDM symbol, and the end position is the last OFDM symbol ; The start position of the second slot is the first OFDM symbol, and the end position is the last OFDM symbol.

[0111] The access subframe configuration of the ...

Embodiment 3

[0125] In this embodiment, there is cooperative transmission between the LS wireless device and the eNB.

[0126]In this embodiment, on the premise that the LS wireless device sends PDCCH to its subordinate UE on the access link and the LS wireless device does not receive the PDCCH from the base station on the backhaul link:

[0127] The transmission and reception switching of the LS wireless device occupies the first OFDM symbol of the backhaul subframe, and the transmission and reception switching of the LS wireless device occupies the last OFDM symbol of the backhaul subframe. In this case, the access subframe configuration of the LS wireless device is a complete subframe, that is, the start position of the access subframe is the first OFDM symbol of the subframe, and the end position is the last OFDM symbol of the subframe.

[0128] The backhaul subframe configuration of the LS wireless device will change with the number of symbols occupied by the PDCCH of the eNB, as foll...

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Abstract

The invention discloses a subframe configuration method and device. The device comprises the step that a base station determines a backhaul subframe and configuration information in access to the subframe according to a preset parameter. The configuration information comprises the overhaul subframe and an index number of an OFDM symbol in access to the start and the end of the subframe, the preset parameter comprises at least one of a symbolic number occupied by physical downlink control information sent by the base station, a bearing mode of a downlink control channel of an LS wireless device on a backhaul link, a bearing mode of the downlink control channel of the LS wireless device on an access link, and the parameter whether the cooperative transmission is carried out between the base station and the LS wireless device or not. The base station informs the LS wireless device of the backhaul subframe and the configuration information in access to the subframe. The subframe configuration method and device can avoid the interference between cellular communications and LS wireless device communications.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a subframe configuration method and device. Background technique [0002] With the development of mobile communication services and technologies, the demand for bandwidth brought about by the evolution of mobile communication systems continues to increase, and bandwidth allocation becomes more and more crowded. However, due to the limited spectrum resources available for mobile communications, the allocated bandwidth cannot meet the requirements of the actual system. To reduce the discrepancy between bandwidth provision and bandwidth demand, it becomes important to utilize the allocated bandwidth more efficiently. [0003] Aiming at the two basic requirements of improving wireless spectrum efficiency and better supporting emerging localized services, currently, a local service (LS, Local Server) solution is introduced in related technologies. In a communication network with L...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04L5/00
Inventor 袁明毕峰吴栓栓梁枫
Owner ZTE CORP
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