METHOD FOR ASSISTING IN UPLINK TRANSMISSION, AND BASE STATION

• US 20150156766A1
• Filed: 02/06/2015
• Published: 06/04/2015
• Est. Priority Date: 08/10/2012
• 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: Xu, Min, Chen, Dong
• Granted Patent: US 9,629,134 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/27 between access points
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

Embodiments of the present invention provide a method for assisting in uplink transmission and a base station. The method for assisting in uplink transmission includes: acquiring, by a first base station, auxiliary uplink control information of a user equipment; sending, by the first base station, the auxiliary uplink control information to a second base station; and performing, by the second base station, uplink data scheduling for the user equipment according to the auxiliary uplink control information. Therefore, a problem in which the second base station cannot acquire or correctly demodulate uplink information sent by the user equipment and consequently cannot schedule uplink data from the user equipment is solved.

Claims

1. A method for assisting in uplink transmission, the method comprising:

acquiring, by a first base station, auxiliary uplink control information of a user equipment; and

sending, by the first base station, the auxiliary uplink control information to a second base station for scheduling uplink data for the user equipment according to the auxiliary uplink control information.

2. The method according to claim 1, further comprising:

determining, by the first base station, at least one of scheduling information, a happy bit, and reference grant information is the auxiliary uplink control information of the user equipment;

acquiring, by the first base station, the scheduling information and the happy bit from the user equipment; and

determining, by the first base station, according to quality of an uplink link from the user equipment to the first base station, the reference grant information that needs to be sent to the user equipment.

3. The method according to claim 2, wherein the method further comprises:

sending, by the first base station, timing information to the second base station if the first base station determines the reference grant information is the auxiliary uplink control information, or the first base station determines the scheduling information is the auxiliary uplink control information, or the user equipment separately sends the scheduling information and the first base station determines the scheduling information separately sent by the user equipment is the auxiliary uplink control information.

4. The method according to claim 1, wherein:

the auxiliary scheduling request is sent to the first base station when a volume of data successfully acquired by the second base station from the user equipment is periodically measured and the data volume is less than a trigger threshold;

or

the auxiliary scheduling request is sent to the first base station if an auxiliary scheduling start indication is obtained from the second base station, wherein the auxiliary scheduling start indication is sent to the first network side device when trigger information measured by the second base station meets a trigger threshold, and at least one of the following is preset, or measured according to trigger configuration information;

a type of the trigger information measured by the second base station, a measurement duration, and the trigger threshold, and the trigger configuration information is preset on the second base station or is acquired from the first network side device.

5. The method according to claim 1, wherein before acquiring the auxiliary uplink control information, or before sending the auxiliary uplink control information to the second base station, the method further comprises:

acquiring, by the first base station, scheduling configuration information, wherein the scheduling configuration information is used for indicating at least one of the following;

content, a reporting mode, and a transmission mode of the auxiliary uplink control information.

6. A method for assisting in uplink transmission, the method comprising:

acquiring, by a second base station, auxiliary uplink control information from a first base station; and

sending, by the second base station, grant information to a user equipment according to the auxiliary uplink control information for scheduling uplink data for the user equipment.

7. The method according to claim 6, wherein the auxiliary uplink control information comprises at least one of the following:

scheduling information, a happy bit, and reference grant information.

8. The method according to claim 7, wherein the method further comprises:

acquiring, by the second base station, timing information if the auxiliary uplink control information is the scheduling information, or if the auxiliary uplink control information is the reference grant information, or if the user equipment separately sends the scheduling information and the first base station determines the scheduling information separately sent by the user equipment is the auxiliary uplink control information.

9. The method according to claim 6, wherein the method further comprises:

measuring, by the second base station, trigger information comprising at least one of the following;

a rate of failing in acquiring data from the user equipment or demodulating data from the user equipment, a signal to interference ratio, and a bit error rate; and

sending, by the second base station, an auxiliary scheduling start indication to a first network side device for sending an auxiliary scheduling request to the first base station if the auxiliary scheduling start indication is obtained if the trigger information meets a trigger threshold, wherein the first network side device is a radio network controller.

10. The method according to claim 6, wherein the method further comprises:

measuring, by the second base station, trigger information comprising a volume of data successfully acquired from the user equipment or at least one of the following;

a rate of failing in acquiring data from the user equipment or demodulating data from the user equipment, a signal to interference ratio, and a bit error rate; and

sending, by the second base station, an auxiliary scheduling request to the first base station in if the trigger information meets a trigger condition.

11. The method according to claim 9, wherein before measuring, by the second base station, the trigger information, the method further comprises:

acquiring, by the second base station, trigger configuration information used for indicating at least one of the following;

the trigger information that needs to be measured, a measurement duration, and the trigger threshold.

12. A base station, comprising:

a processor, configured to acquire auxiliary uplink control information; and

a transmitter, configured to send the auxiliary uplink control information to a second base station.

13. The base station according to claim 12, wherein the processor is further configured to:

acquire scheduling information and/or a happy bit from a user equipment, or determine reference grant information according to quality of a link from the user equipment to the base station; and

determine at least one of the following;

the scheduling information, the happy bit, and the reference grant information is the auxiliary uplink control information.

14. The base station according to claim 13, wherein the transmitter is further configured to send timing information to the second base station if the processor determines the reference grant information is the auxiliary uplink control information, or if the processor determines the scheduling information is the auxiliary uplink control information, or if the user equipment separately sends the scheduling information and the processor determines the scheduling information separately sent by the user equipment is the auxiliary uplink control information.

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

the processor is further configured to measure auxiliary measurement information; and

the transmitter is further configured to periodically send the auxiliary measurement information to the second base station.

16. A base station, comprising:

a processor, configured to acquire auxiliary uplink control information from a first base station; and

a transmitter, configured to send grant information to a user equipment according to the auxiliary uplink control information, so that uplink data scheduling is performed for the user equipment.

17. The base station according to claim 16, wherein the auxiliary uplink control information comprises at least one of the following:

scheduling information, a happy bit, and reference grant information.

18. The base station according to claim 17, wherein the processor is further configured to acquire timing information if the auxiliary uplink control information is the reference grant information, or if the auxiliary uplink control information is the scheduling information, or if the user equipment separately sends the scheduling information and the first base station determines the scheduling information separately sent by the user equipment is the auxiliary uplink control information.

19. The base station according to claim 16, wherein:

the processor is further configured to measure trigger information comprising at least one of the following;

a rate of failing in acquiring data from the user equipment or demodulating data from the user equipment, a signal to interference ratio, and a bit error rate; and

the transmitter is further configured to send, if the trigger information meets a trigger threshold, an auxiliary scheduling start indication to a first network side device.

20. The base station according to claim 16, wherein:

the processor is further configured to measure trigger information comprising a volume of data successfully acquired by the base station from the user equipment or at least one of the following;

a rate of failing in acquiring data from the user equipment or demodulating data from the user equipment, a signal to interference ratio, and a bit error rate; and

the transmitter is further configured to send an auxiliary scheduling request to the first base station.