REVERSE POWER CONTROL METHODS BASED ON MULTI CARRIER

• US 20110292899A1
• Filed: 12/22/2009
• Published: 12/01/2011
• Est. Priority Date: 02/06/2009
• Status: Active Grant

• Current Assignee: Pattington IP LLC (IP Edge LLC)
• Original Assignee: ZTE Corporation
• Inventors: Xie, Zhongshi, Yu, Xi
• Granted Patent: US 8,842,618 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04W 52/08 Closed loop power control
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/265 taking into account the quality of service QoS
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• CPC Class Codes: H04W 52/50 at the moment of starting communication in a multiple access environment

Abstract

A reverse power control method based on multi-carrier includes: an access network determining a forward carrier for a service, establishing a corresponding relationship between a reverse carrier corresponding to the forward carrier and the forward carrier, and transmitting the forward carrier and the corresponding relationship to the terminal (S102); the access network determining a power control command of the service according to a service type of the service (S104); the access network transmitting the power control command of the service to the terminal by the forward carrier (S106). The present invention can reduce the power consumption of the terminal efficiently and improve the QoS.

Claims

1. A reverse power control method based on multi-carrier, which is used to perform, by an access network, power control on multiple services requested by a terminal, for each service, the method comprising:

the access network determining a forward carrier for the service, establishing a corresponding relationship between a reverse carrier corresponding to the forward carrier and the forward carrier, and transmitting the forward carrier and the corresponding relationship to the terminal;

the access network determining a power control command of the service according to a service type of the service; and

the access network transmitting the power control command of the service to the terminal by the forward carrier.

2. The method according to claim 1, wherein, before the access network determines the forward carrier for the service, the method further comprises:

the terminal transmitting an access request to the access network, so as to request for establishing a forward service channel of the service, wherein the access request carries information of the service type of the service; and

the access network establishing the forward service channel of the service according to the access request, wherein the forward service channel is borne on the forward carrier.

3. The method according to claim 2, wherein the step of the access network transmitting the power control command of the service to the terminal by the forward carrier comprises:

the access network transmitting the power control command of the service to the terminal via the forward service channel borne on the forward carrier.

4. The method according to claim 1, wherein the process of determining the power control command comprises:

determining the power control command according to a power control strategy and/or a power control parameter.

5. The method according to claim 1, wherein, after the access network transmits the power control command of the service to the terminal, the method further comprises:

the terminal determining the reverse carrier corresponding to the forward carrier according to the forward carrier and the corresponding relationship; and

the terminal adjusting pilot power of a reverse service channel of the service on the reverse carrier by using the power control command.

12. The method according to claim 2, wherein, after the access network transmits the power control command of the service to the terminal, the method further comprises:

the terminal determining the reverse carrier corresponding to the forward carrier according to the forward carrier and the corresponding relationship; and

the terminal adjusting pilot power of a reverse service channel of the service on the reverse carrier by using the power control command.

13. The method according to claim 3, wherein, after the access network transmits the power control command of the service to the terminal, the method further comprises:

the terminal determining the reverse carrier corresponding to the forward carrier according to the forward carrier and the corresponding relationship; and

the terminal adjusting pilot power of a reverse service channel of the service on the reverse carrier by using the power control command.

14. The method according to claim 4, wherein, after the access network transmits the power control command of the service to the terminal, the method further comprises:

the terminal determining the reverse carrier corresponding to the forward carrier according to the forward carrier and the corresponding relationship; and

the terminal adjusting pilot power of a reverse service channel of the service on the reverse carrier by using the power control command.

6. A reverse power control method based on multi-carrier, which is used to perform, by an access network, a power control on multiple services requested by a terminal, for each service, the method comprising:

the access network determining a power control command of the service according to a service type of the service;

the terminal determining a reverse carrier of the service, establishing a corresponding relationship between the reverse carrier and a forward carrier corresponding to the reverse carrier, and transmitting the reverse carrier and the corresponding relationship to the access network; and

the access network determining the forward carrier corresponding to the reverse carrier according to the reverse carrier and the corresponding relationship, and transmitting the power control command of the service to the terminal via the forward carrier.

7. The method according to claim 6, wherein, before the access network transmits the power control command of the service to the terminal via the forward carrier, the method further comprises:

the terminal transmitting an access request to the access network, so as to request for establishing a forward service channel of the service, wherein the access request carries information of the service type of the service; and

the access network establishing the forward service channel of the service according to the access request, wherein the forward service channel is borne on the forward carrier.

8. The method according to claim 7, wherein the step of the access network transmitting the power control command of the service to the terminal via the forward carrier comprises:

the access network transmitting the power control command of the service to the terminal via the forward service cannel borne on the forward carrier.

9. The method according to claim 6, wherein the process of determining the power control command comprises:

determining the power control command according to a power control strategy and/or a power control parameter.

10. The method according to claim 6, wherein after the access network transmits the power control command of the service to the terminal, the method further comprises:

the terminal adjusting pilot power of a reverse service channel of the service on the reverse carrier by using the power control command.

11. The method according to claim 6 wherein that the terminal notifies the access network of the reverse carrier and the corresponding relationship via one of the following messages:

a service channel establishment completion response message, and a negotiation message.

15. The method according to claim 7, wherein after the access network transmits the power control command of the service to the terminal, the method further comprises:

the terminal adjusting pilot power of a reverse service channel of the service on the reverse carrier by using the power control command.

16. The method according to claim 8, wherein after the access network transmits the power control command of the service to the terminal, the method further comprises:

the terminal adjusting pilot power of a reverse service channel of the service on the reverse carrier by using the power control command.

17. The method according to claim 9, wherein after the access network transmits the power control command of the service to the terminal, the method further comprises:

the terminal adjusting pilot power of a reverse service channel of the service on the reverse carrier by using the power control command.

18. The method according to claim 7, wherein the terminal notifies the access network of the reverse carrier and the corresponding relationship via one of the following messages:

a service channel establishment completion response message, and a negotiation message.

19. The method according to claim 8, wherein the terminal notifies the access network of the reverse carrier and the corresponding relationship via one of the following messages:

a service channel establishment completion response message, and a negotiation message.

20. The method according to claim 9, wherein the terminal notifies the access network of the reverse carrier and the corresponding relationship via one of the following messages:

a service channel establishment completion response message, and a negotiation message.