Bandwidth allocation method and apparatus, user equipment, and base station

Patent metadata

Field	Value
Publication number	US-2016014778-A1
Application number	US-201514865831-A
Country	US
Kind code	A1
Filing date	Sep 25, 2015
Priority date	Mar 28, 2013
Publication date	Jan 14, 2016
Grant date	—

Abstract

Embodiments of the present invention provide a bandwidth allocation method and apparatus, user equipment, and a base station. The method includes: receiving, by user equipment, virtual bandwidth configuration information, where the virtual bandwidth configuration information is used for indicating a configuration of a virtual bandwidth; and performing, by the user equipment, signal reception and/or signal processing according to the virtual bandwidth indicated by the virtual bandwidth configuration information, where each virtual bandwidth is a part or all of a downlink maximum available bandwidth or a downlink transmission bandwidth, and the downlink maximum available bandwidth is a maximum bandwidth available for downlink transmission. In the embodiments of the present invention, reduction of overheads and reduction of complexity of signal reception and signal processing are implemented, and overheads and complexity of signal reception and processing feedback can be flexibly controlled.

First claim

What is claimed is:

1 . A bandwidth configuration method, comprising:
receiving, by user equipment (UE), virtual bandwidth configuration information, wherein the virtual bandwidth configuration information is used for indicating a configuration of a virtual bandwidth; performing, by the UE, signal reception and/or signal processing according to the virtual bandwidth indicated by the virtual bandwidth configuration information, wherein the virtual bandwidth is a part or all of a downlink maximum available bandwidth or a downlink transmission bandwidth, and the downlink maximum available bandwidth is a maximum bandwidth available for downlink transmission.

2 . The method according to claim 1 , wherein the UE receives at least two pieces of virtual bandwidth configuration information, and the method further comprises:
receiving, by the UE, first configuration information, wherein the first configuration information is used for instructing the UE to perform the signal reception or signal processing according to a virtual bandwidth corresponding to at least one piece of virtual bandwidth configuration information in the at least two pieces of virtual bandwidth configuration information.

3 . The method according to claim 1 , wherein the signal reception and/or signal processing comprises at least one of the following signal reception or signal processing:
channel state information reference signal (CSI-RS) reception, cell-specific reference signal (CRS) reception, physical downlink control channel (PDCCH) search, enhanced physical downlink control channel (EPDCCH) search, channel state information (CSI) measurement, radio resource management (RRM) measurement, CSI feedback, physical downlink shared channel (PDSCH) reception, physical hybrid automatic repeat request indicator channel (PHICH) reception, enhanced physical hybrid automatic repeat request indicator channel (EPHICH) reception, physical multicast channel (PMCH) reception, and common signal reception, wherein the common signal reception comprises at least one of the following:
physical broadcast channel (PBCH) reception, enhanced physical broadcast channel (ePBCH) reception, primary synchronization signal (PSS)/secondary synchronization signal (SSS) reception, and discovery signal reception.

4 . The method according to claim 1 , wherein the virtual bandwidth configuration information comprises at least one piece of information of a size, position information, a type, and downlink transmit power information of the virtual bandwidth.

5 . The method according to claim 1 , wherein:
the virtual bandwidth configuration information comprises information for indicating whether a common signal and/or a common channel is transmitted on the virtual bandwidth, wherein the common signal comprises at least one of a CRS, a cell specific CSI-RS, a system information block, a primary synchronization signal, a secondary synchronization signal, and a discovery signal; and the common channel comprises at least one of a physical broadcast channel and a common control channel.

6 . The method according to claim 1 , wherein when the UE receives at least two pieces of virtual bandwidth configuration information, the method further comprises:
receiving, by the UE, scheduling information of inter-virtual bandwidth, wherein the scheduling information comprises index information for indicating a virtual bandwidth corresponding to a resource scheduled by using the scheduling information.

7 . A bandwidth configuration apparatus located in user equipment (UE), the apparatus comprising:
a processor and a non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium comprises a program stored therein, and when the program runs, the following are performed:
receiving virtual bandwidth configuration information, wherein the virtual bandwidth configuration information is used for indicating a configuration of a virtual bandwidth; and
performing signal reception and/or signal processing according to the virtual bandwidth indicated by the virtual bandwidth configuration information, wherein the virtual bandwidth is a part or all of a downlink maximum available bandwidth or a downlink transmission bandwidth, and the downlink maximum available bandwidth is a maximum bandwidth available for downlink transmission.

8 . The apparatus according to claim 7 , wherein when at least two pieces of virtual bandwidth configuration information are received, the following is further performed:
receiving first configuration information, wherein the first configuration information is used for instructing the UE to perform the signal reception or signal processing according to a virtual bandwidth corresponding to at least one piece of virtual bandwidth configuration information in the at least two pieces of virtual bandwidth configuration information.

9 . The apparatus according to claim 7 , wherein the signal reception and/or signal processing comprises at least one of the following signal reception or signal processing:
channel state information reference signal (CSI-RS) reception, cell-specific reference signal (CRS) reception, physical downlink control channel (PDCCH) search, enhanced physical downlink control channel (EPDCCH) search, channel state information (CSI) measurement, radio resource management (RRM) measurement, CSI feedback, physical downlink shared channel (PDSCH) reception, physical hybrid automatic repeat request indicator channel (PHICH) reception, enhanced physical hybrid automatic repeat request indicator channel (EPHICH) reception, physical multicast channel (PMCH) reception, and common signal reception, wherein the common signal reception comprises at least one of the following:
physical broadcast channel (PBCH) reception, enhanced physical broadcast channel (ePBCH) reception, primary synchronization signal (PSS)/secondary synchronization signal (SSS) reception, and discovery signal reception.

10 . The apparatus according to claim 7 , wherein the virtual bandwidth configuration information comprises at least one piece of information of a size, position information, a type, and downlink transmit power information of the virtual bandwidth.

11 . The apparatus according to claim 10 , wherein the position information of the virtual bandwidth comprises starting position information of the virtual bandwidth or central frequency information of the virtual bandwidth, wherein a starting position of the virtual bandwidth is a starting position of any one resource block group in resource block groups obtained by dividing according to the downlink maximum available bandwidth or the downlink transmission bandwidth.

12 . The apparatus according to claim 10 , wherein:
the size of the virtual bandwidth equals a sum of sizes of at least one resource block group in resource block groups obtained by dividing according to the downlink maximum available bandwidth or the downlink transmission bandwidth; or the size of the virtual bandwidth is predefined.

13 . The apparatus according to claim 10 , wherein the downlink transmit power information comprises transmit power of a cell-specific reference signal (CRS) or a reduced cell-specific reference signal (RCRS).

14 . The apparatus according to claim 10 , wherein the type of the virtual bandwidth is at least one of a centralized virtual bandwidth, a discontinuous virtual bandwidth, and a distributed virtual bandwidth.

15 . The apparatus according to claim 7 , wherein:
the virtual bandwidth configuration information comprises information for indicating whether a common signal and/or a

Assignees

• Huawei Tech Co Ltd

Inventors

• Zhou Yongxing
• Sun Jingyuan
• Mazzarese David Jean-Marie
• Xue Lixia
• Ren Xiaotao

Classifications

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04W24/06

  Testing, {supervising or monitoring} using simulated traffic · CPC title

• H04W72/0446 Primary

  Resources in time domain, e.g. slots or frames · CPC title

• H04L5/0092

  Indication of how the channel is divided · CPC title

• H04B7/0626

  Channel coefficients, e.g. channel state information [CSI] · CPC title