METHOD AND APPARATUS FOR IMPROVING INTER-eNB CARRIER AGGREGATION IN A WIRELESS COMMUNICATION SYSTEM

• US 20140078989A1
• Filed: 09/18/2013
• Published: 03/20/2014
• Est. Priority Date: 09/19/2012
• Status: Abandoned Application

• Current Assignee: Innovative Sonic Limited
• Original Assignee: Innovative Sonic Limited
• Inventors: Guo, Yu-Hsuan, Ou, Meng-Hui
• Application Number:
  US14/030,090
• Publication Number:
  US 20140078989A1
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 27/34 Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04W 72/27 between access points

Abstract

A method and apparatus are disclosed for operating a wireless communication system by receiving a request message transmitted from a first network node to a second network node to request Carrier Aggregation to aggregate a cell controlled by the second network node to a User Equipment (UE), the request message including a Radio Network Temporary Identifier (RNTI) of a UE, and transmitting an accept message or a reject message from the second network node to the first network node to indicate whether to accept or reject Carrier Aggregation.

Claims

1. A method of operating a wireless communication system comprising:

receiving a request message transmitted from a first network node to a second network node to request Carrier Aggregation to aggregate a cell controlled by the second network node to a UE, the request message including a Radio Network Temporary Identifier (RNTI) of a User Equipment (UE); and

transmitting an accept message or a reject message from the second network node to the first network node to indicate whether to accept or reject Carrier Aggregation.

2. The method of claim 1, wherein the request message comprises at least one of:

power saving preference of the UE;

interference information of the UE for in device coexistence;

information related to a location of the UE;

a cause for Carrier Aggregation;

or

one or more available values for the RNTI.

3. The method of claim 1, wherein the RNTI is used by the UE in a cell controlled by the first network node.

4. The method of claim 1, wherein the accept message comprises at least one of:

an indication of whether or not the second network node is a mobile relay;

congestion situation in the cell controlled by the second network node;

or

a value for the RNTI.

5. The method of claim 1, wherein the RNTI is one of:

a Cell RNTI (C-RNTI);

a Transmit Power Control-Physical Uplink Control Channel RNTI (TPC-PUCCH-RNTI);

or

a Transmit Power Control-Physical Uplink Shared Channel-RNTI (TPC-PUSCH-RNTI).

6. The method of claim 1, wherein the reject message comprises at least one of:

a reject cause set to unavailability of the RNTI if the RNTI is used by another UE in the cell controlled by the second network node;

one or more suggested values for the RNTI;

one or more available values for the RNTI;

a wait time to prohibit the request message;

congestion situation in the cell controlled by the second network node;

or

a reject cause that the second network node is a (mobile) relay.

7. The method of claim 1, wherein the second network node transmits the reject message if the RNTI is used by another UE in the cell controlled by the second network node.

8. A method of operating a wireless communication system comprising:

transmitting a message from a second network node to a first network node; and

indicating with the message that one or more available values of a Radio Network Temporary Identifier (RNTI) corresponding to a cell controlled by the second network node.

9. The method of claim 8, wherein the second network node transmits the message to the first network node if requested by the first network node or the available values change compared with the available values previously transmitted to the first network node.

10. The method of claim 8, wherein the RNTI is one of:

a Cell RNTI (C-RNTI);

a Transmit Power Control-Physical Uplink Control Channel RNTI (TPC-PUCCH-RNTI);

or

a Transmit Power Control-Physical Uplink Shared Channel-RNTI (TPC-PUSCH-RNTI).

11. A communications system comprising:

a second network node comprising a network node control circuit, a network node processor installed in the network node control circuit, and a network node memory installed in the network node control circuit and coupled to the network node processor; and

wherein the network node processor is configured to execute a program code stored in the network node memory to;

receive a request message transmitted from a first network node to the second network node to request Carrier Aggregation to aggregate a cell controlled by the second network node to a UE, the request message including a Radio Network Temporary Identifier (RNTI) of a User Equipment (UE); and

transmit an accept message or a reject message from the second network node to the first network node to indicate whether to accept or reject Carrier Aggregation.

12. The communication system of claim 11, wherein the request message comprises at least one of:

power saving preference of the UE;

interference information of the UE for in device coexistence;

information related to a location of the UE;

a cause for Carrier Aggregation;

or

one or more available values for the RNTI.

13. The communication system of claim 11, wherein the RNTI is used by the UE in a cell controlled by the first network node.

14. The communication system of claim 11, wherein the accept message comprises at least one of:

an indication of whether or not the second network node is a mobile relay;

congestion situation in the cell controlled by the second network node;

or

a value for the RNTI.

15. The communication system of claim 11, wherein the RNTI is one of:

a Cell RNTI (C-RNTI);

a Transmit Power Control-Physical Uplink Control Channel RNTI (TPC-PUCCH-RNTI);

or

a Transmit Power Control-Physical Uplink Shared Channel-RNTI (TPC-PUSCH-RNTI).

16. The communication system of claim 11, wherein the reject message comprises at least one of:

a reject cause set to unavailability of the RNTI if the RNTI is used by another UE in the cell controlled by the second network node;

one or more suggested values for the RNTI;

one or more available values for the RNTI;

a wait time to prohibit the request message;

congestion situation in the cell controlled by the second network node;

or

a reject cause that the second network node is a mobile relay.

17. The communication system of claim 11, wherein the second network node transmits the reject message if the RNTI is used by another UE in the cell controlled by the second network node.

18. A communications system comprising:

a second network node comprising a network node control circuit, a network node processor installed in the network node control circuit, and a network node memory installed in the network node control circuit and coupled to the network node processor;

wherein the network node processor is configured to execute a program code stored in the network node memory to;

transmit a message from the second network node to a first network node; and

indicate with the message that one or more available values of a Radio Network Temporary Identifier (RNTI) corresponding to a cell controlled by the second network node.

19. The communication system of claim 18, wherein the second network node transmits the message to the first network node if requested by the first network node or the available values change compared with the available values previously transmitted to the first network node.

20. The communication system of claim 18, wherein the RNTI is one of:

a Cell RNTI (C-RNTI);

a Transmit Power Control-Physical Uplink Control Channel RNTI (TPC-PUCCH-RNTI);

or

a Transmit Power Control-Physical Uplink Shared Channel-RNTI (TPC-PUSCH-RNTI).