METHOD AND DEVICE FOR RESOURCE CONFIGURATION

• US 20140362813A1
• Filed: 08/25/2014
• Published: 12/11/2014
• Est. Priority Date: 09/28/2012
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: HU, Zhenxing, GAO, Yongqiang, ZHANG, Wen, LI, Yue
• Granted Patent: US 9,756,624 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access

Abstract

The present invention discloses a method and a device for resource configuration, the method includes: at first a base station broadcasts public resource configuration to a user equipment on a broadcast channel, and then the base station obtains an available public resource after receiving public resource requesting information sent by a target user equipment in a desynchronization state, the target user equipment is a user equipment of the user equipments which is in a desynchronization state; finally the base station sends an index number of the available public resource to the target user equipment, so that the target user equipment performs data transmission through the available public resource corresponding to the index number of the available public resource. The present invention can be applied to the field of communication system.

Claims

1. A method for resource configuration, comprising:

broadcasting, by a base station, a public resource configuration to a user equipment on a broadcast channel, wherein the public resource configuration comprises a physical resource configuration list (PHYConfig list);

obtaining, by the base station, an available public resource after receiving public resource requesting information sent by a target user equipment which is in a desynchronization state;

sending, by the base station, an index number of the available public resource to the target user equipment, to enable the target user equipment to perform data transmission through the available public resource corresponding to the index number of the available public resource, wherein the available public resource is obtained by the target user equipment from the PHYConfig list according to the index number of the available public resource.

2. The method for resource configuration according to claim 1, wherein before receiving, by the base station, the public resource requesting information sent by the target user equipment which is in the desynchronization state, the method further comprises:

triggering, by the base station, the target user equipment to enter into the desynchronization state using medium access control (MAC) layer control information or a radio resource control protocol (RRC) message.

3. The method for resource configuration according to claim 1, wherein the obtaining, by the base station, the available public resource after receiving the public resource requesting information sent by the target user equipment comprises:

if the target user equipment accesses through an ordinary preamble (preamble) and accesses successfully, obtaining, by the base station, the available public resource after receiving a MSG3 message which carries a public resource request and is sent by the target user equipment.

4. The method for resource configuration according to claim 1, wherein the public resource configuration further comprises access resources (RACH resources),

the obtaining, by the base station, the available public resource after receiving the public resource requesting information sent by the target user equipment which is in the desynchronization state comprises:

if the target user equipment accesses through a dedicated preamble for public resource contention, obtaining, by the base station, the available public resource after receiving access information which carries the dedicated preamble for the public resource contention and is sent by the target user equipment, wherein the dedicated preamble for the public resource contention is selected from the RACH resources by the target user equipment; and

the sending, by the base station, the index number of the available public resource to the target user equipment comprises;

sending, by the base station, an extended access response (RAR) to the target user equipment, wherein the extended RAR carries the index number of the available public resource.

5. The method for resource configuration according to claim 1, wherein after broadcasting, by the base station, the public resource configuration to the user equipment on the broadcast channel, the method further comprises:

when the base station needs to transmit downlink data to the target user equipment and the available public resource exists, sending, by the base station the index number of the available public resource to the target user equipment and sending a physical downlink control channel order (PDCCH order) to the target user equipment;

if the PDCCH order carries a dedicated access resource configured for the target user equipment, then after the target user equipment accesses successfully through the dedicated access resource, scheduling, by the base station, the target user equipment to receive the downlink data through the available public resource, wherein the available public resource is obtained by the target user equipment from the PHYConfig list according to the index number of the available public resource;

or

if the PDCCH order does not carry the dedicated access resource configured for the target user equipment, then after the target user equipment accesses successfully, receiving, by the base station, an identifier C-RNTI of the target user equipment which is sent by the target user equipment; and

scrambling, by the base station, a physical downlink control channel with the C-RNTI, and indicating the user equipment, via the scrambled physical downlink control channel, to receive the downlink data through the available public resource.

6. A method for resource configuration, comprising:

receiving, by a user equipment, a public resource configuration sent by a base station through a broadcast channel, wherein the public resource configuration comprises a physical resource configuration list (PHYConfig list);

sending, by a target user equipment of the user equipment, public resource requesting information to the base station, so that the base station obtains an available public resource, wherein the target user equipment is in a desynchronization state;

receiving, by the target user equipment, an index number of the available public resource sent by the base station;

performing, by the target user equipment, data transmission through the available public resource corresponding to the index number of the available public resource, wherein the available public resource is obtained by the target user equipment from the PHYConfig list according to the index number of the available public resource.

7. The method for resource configuration according to claim 6, wherein before sending, by the target user equipment of the user equipment the public resource requesting information to the base station, wherein the target user equipment is in the desynchronization state, the method further comprises:

entering, by the target user equipment, into the desynchronization state according to medium access control (MAC) layer control information or a radio resource control protocol (RRC) message.

8. The method for resource configuration according to claim 6, wherein the sending, by the target user equipment of the user equipment the public resource requesting information to the base station, where the target user equipment is in the desynchronization state, comprises:

if the target user equipment accesses through an ordinary preamble (preamble) and accesses successfully, sending, by the target user equipment to the base station, a MSG3 message carrying a public resource request.

9. The method for resource configuration according to claim 6, wherein the public resource configuration further comprises access resources (RACH resources),

the sending, by the target user equipment of the user equipment, the public resource requesting information to the base station, wherein the target user equipment is in the desynchronization state, comprises:

if the target user equipment accesses through a dedicated preamble for public resource contention, sending, by the target user equipment to the base station, access information carrying the dedicated preamble for the public resource contention, wherein the dedicated preamble for the public resource contention is selected by the target user equipment from the RACH resources;

the receiving, by the target user equipment, the index number of the available public resource sent by the base station comprises;

receiving, by the target user equipment, an extended access response (RAR) sent by the base station, wherein the extended RAR carries the index number of the available public resource.

10. The method for resource configuration according to claim 6, wherein after receiving, by the user equipment, the public resource configuration sent by the base station through the broadcast channel, the method further comprises:

when the base station needs to transmit downlink data to the target user equipment and an available public resource exists, receiving, by the target user equipment, an index number of the available public resource and a physical downlink control channel order (PDCCH order) sent by the base station;

if the PDCCH order carries a dedicated access resource configured for the target user equipment, receiving, by the target user equipment, the downlink data through the available public resource according to a schedule of the base station,

wherein the available public resource is obtained by the target user equipment from the PHYConfig list according to the index number of the available public resource;

or

if the PDCCH order does not carry the dedicated access resource configured for the target user equipment, then after the target user equipment accesses successfully, sending, by the target user equipment, an identifier C-RNTI of the target user equipment to the base station;

receiving, by the target user equipment, the downlink data through the available public resource according to an indication of the base station.

11. A base station, comprising:

a processor, configured to broadcast a public resource configuration to a user equipment on a broadcast channel, wherein the public resource configuration comprises a physical resource configuration list (PHYConfig list);

a receiver, configured to, after the processor broadcasts the public resource configuration to the user equipment on the broadcast channel, receive public resource requesting information sent by a target user equipment which is in a desynchronization state;

the processor, is further configured to, after the receiver receives the public resource requesting information sent by the target user equipment, obtain an available public resource; and

a transmitter, configured to send to the target user equipment an index number of the available public resource obtained by the processor, to enable the target user equipment to perform data transmission through the available public resource corresponding to the index number of the available public resource, wherein the available public resource is obtained by the target user equipment according to the index number of the available public resource, from the PHYConfig list broadcasted by the processor.

12. The base station according to claim 11, wherein:

the processor, is further configured to, before the receiver receives the public resource requesting information sent by the target user equipment, trigger the target user equipment to enter into the desynchronization state through medium access control (MAC) layer control information or a radio resource control protocol (RRC) message.

13. The base station according to claim 11, wherein:

the receiver, is further configured to, if the target user equipment accesses through an ordinary preamble (preamble) and accesses successfully, receive a MSG3 message which carries a public resource request and is sent by the target user equipment.

14. The base station according to claim 11, wherein the public resource configuration further comprises access resources (RACH resources),

the receiver is further configured to, if the target user equipment accesses through a dedicated preamble for public resource contention, receive access information which carries the dedicated preamble for public resource contention and is sent by the target user equipment, wherein the dedicated preamble for the public resource contention is selected from the RACH resources by the target user equipment;

the transmitter is further configured to send an extended access response (RAR) to the target user equipment, wherein the extended RAR carries the index number of the available public resource.

15. The base station according to claim 11, wherein:

the transmitter is further configured to, after the processor broadcasts the public resource configuration to the user equipment on the broadcast channel, if downlink data needs to be transmitted to the target user equipment and the available public resources exists, send the index number of the available public resource to the target user equipment and send a physical downlink control channel order (PDCCH order) to the target user equipment;

the processor is further configured to, if the PDCCH order carries a dedicated access resource configured for the target user equipment, then after the target user equipment accesses successfully through the dedicated access resource, schedule the target user equipment to receive the downlink data through the available public resource,

wherein the available public resource is obtained by the target user equipment from the PHYConfig list according to the index number of the available public resource;

or

the receiver is further configured to, if the PDCCH order does not carry the dedicated access resource configured for the target user equipment, then after the target user equipment accesses successfully, receive an identifier C-RNTI of the target user equipment which is sent by the target user equipment;

the processor is further configured to, after scrambling a physical downlink control channel with the C-RNTI received by the receiver, indicate the user equipment, via the scrambled physical downlink control channel, to receive the downlink data through the available public resource.

16. A user equipment, comprising:

a receiver, configured to receive a public resource configuration sent by a base station through a broadcast channel, wherein the public resource configuration comprises a physical resource configuration list (PHYConfig list);

a transmitter, configured to, after the receiver receives the public resource configuration sent by the base station through the broadcast channel, send public resource requesting information to the base station, to enable the base station to obtain an available public resource;

the receiver is further configured to receive an index number of the available public resource sent by the base station;

a processor, configured to perform data transmission through the available public resource corresponding to the index number of the available public resource received by the receiver, wherein the available public resource is obtained by the target user equipment from the PHYConfig list according to the index number of the available public resource.

17. The user equipment according to claim 16, wherein:

the processor is further configured to, before the transmitter sends the public resource requesting information to the base station, enter into the desynchronization state according to medium access control (MAC) layer control information or a radio resource control protocol (RRC) message.

18. The user equipment according to claim 16, wherein:

the transmitter is configured to, if accessing through an ordinary preamble (preamble) and accessing successfully, send to the base station a MSG3 message carrying a public resource request.

19. The user equipment according to claim 16, wherein the public resource configuration further comprises access resources (RACH resources),

the transmitter is further configured to, if accessing through a dedicated preamble for public resource contention, send to the base station access information carrying the dedicated preamble for the public resource contention, wherein the dedicated preamble for the public resource contention is selected from the RACH resources;

the receiver is further configured to receive an extended access response (RAR) sent by the base station, wherein the extended RAR carries the index number of the available public resource.

20. The user equipment according to claim 16, wherein:

the receiver is further configured to, after receiving the public resource configuration sent by the base station through the broadcast channel, when the base station needs to transmit downlink data and the available public resource exists, receive the index number of the available public resource and a physical downlink control channel order (PDCCH order) sent by the base station;

the receiver is further configured to, if the PDCCH order carries a dedicated access resource, receive the downlink data through the available public resource according to a schedule of the base station,

wherein the available public resource is obtained from the PHYConfig list according to the index number of the available public resource;

or

the transmitter is further configured to, if the PDCCH order received by the receiver does not carry the dedicated access resource, then after accessing successfully, send an identifier C-RNTI of the target user equipment to the base station; and

the receiver is further configured to, after the transmitter sends the identifier C-RNTI of the target user equipment to the base station, receive the downlink data through the available public resource according to an indication of the base station.