Mobile station apparatus, mobile communication system and communication method

• US 8,885,582 B2
• Filed: 07/15/2011
• Issued: 11/11/2014
• Est. Priority Date: 04/24/2008
• 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: Yamada, Shohei, Aiba, Tatsushi
• Primary Examiner(s): Mered, Habte
• Application Number:
  US13/184,381
• Publication Number:
  US 20110274077A1
• Time in Patent Office: 1,215 Days
• Field of Search: 370/254, 370/255, 370310-352, 370/431, 370432-459, 455450-455
• US Class Current: 370/329
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0089 due to addition or removal of users or terminals
• CPC Class Codes: H04L 5/0096 Indication of changes in allocation
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support

Abstract

In a mobile communication system in which an space of a physical downlink control channel for a mobile station apparatus to search is defined based on a mobile station identity assigned from a base station apparatus, the base station apparatus places a physical downlink control channel including a first mobile station identity or a physical downlink control channel including a second mobile station identity in a search space of a physical downlink control channel corresponding to the first mobile station identity when the base station apparatus assigns a plurality of mobile station identities to the mobile station apparatus, and when a plurality of mobile station identities is assigned from the base station apparatus, the mobile station apparatus performs decoding processing of the physical downlink control channel including the first mobile station identity and the physical downlink control channel including the second mobile station identity in the search space of the physical downlink control channel corresponding to the first mobile station identity.

Claims

1. A mobile communication system in which a mobile station apparatus searches for a physical downlink control channel (PDCCH) transmitted by a base station apparatus in a search space, the search space comprising a plurality of resource elements, the search space corresponding to a cell-radio network temporary identity (C-RNTI) for dynamic scheduling, the mobile communication system comprising:

the base station apparatus configured to transmit, to the mobile station apparatus, the PDCCH in the search space, the PDCCH including both a C-RNTI for persistent scheduling and resource allocation information set to a predetermined value; and

the mobile station apparatus configured;

to search for the PDCCH in the search space, the search space being located by the mobile station apparatus according to the C-RNTI for dynamic scheduling; and

to decode the PDCCH according to the C-RNTI for persistent scheduling, when the mobile station apparatus has both the C-RNTI for dynamic scheduling and the C-RNTI for persistent scheduling;

wherein the mobile station apparatus is further configured to halt data transmission on persistently-allocated resources when the PDCCH includes the C-RNTI for persistent scheduling and the resource allocation information has been set to the predetermined value.

2. A mobile station apparatus adapted to search for a physical downlink control channel (PDCCH) transmitted by a base station apparatus in a search space, the search space comprising a plurality of resource elements, the search space corresponding to a cell-radio network temporary identity (C-RNTI) for dynamic scheduling, the mobile station apparatus comprising:

a decoding unit configured to search for the PDCCH in the search space, the search space being located by the mobile station apparatus according to the C-RNTI for dynamic scheduling, and to decode the PDCCH according to a C-RNTI for persistent scheduling, wherein the PDCCH includes both the C-RNTI for persistent scheduling and resource allocation information; and

a scheduling unit configured to halt transmission on persistently-allocated resources when the PDCCH includes the C-RNTI for persistent scheduling and the resource allocation information has been set to a predetermined value.

3. A processing method in a mobile station apparatus which searches for a physical downlink control channel (PDCCH) transmitted by a base station apparatus in a search space, the search space comprising a plurality of resource elements, the search space corresponding to a cell-radio network temporary identity (C-RNTI) for dynamic scheduling, the processing method comprising:

searching for the PDCCH in the search space, the search space being located by the mobile station apparatus according to the C-RNTI for dynamic scheduling;

decoding the PDCCH according to a C-RNTI for persistent scheduling when the mobile station apparatus has both the C-RNTI for dynamic scheduling and the C-RNTI for persistent scheduling, wherein the PDCCH includes both the C-RNTI for persistent scheduling and resource allocation information; and

halting data transmission on persistently-allocated resources when the PDCCH includes the C-RNTI for persistent scheduling and the resource allocation information has been set to a predetermined value.

4. A base station apparatus adapted to transmit, to a mobile station apparatus, a physical downlink control channel (PDCCH) in a search space, the search space comprising a plurality of resource elements, the search space corresponding to a cell-radio network temporary identity (C-RNTI) for dynamic scheduling, the base station apparatus comprising:

a scheduling unit; and

a transmitting unit configured to transmit, to the mobile station apparatus, the PDCCH in the search space, wherein the PDCCH includes both a C-RNTI for persistent scheduling and resource allocation information set to a predetermined value when a mobile station apparatus has both the C-RNTI for dynamic scheduling and the C-RNTI for persistent scheduling, wherein the PDCCH is designated to be searched in the search space, the search space being located by the mobile station apparatus according to the C-RNTI for dynamic scheduling, and wherein the PDCCH is further designated to be decoded by the mobile station apparatus according to the C-RNTI for persistent scheduling, and wherein the predetermined value of the resource allocation information is designated to direct the mobile station apparatus to halt data transmission on persistently-allocated resources.

5. A method comprising:

searching, by a mobile station, for a physical downlink control channel (PDCCH) in a search space, the search space being located by the mobile station apparatus according to a cell-radio network temporary identity (C-RNTI) for dynamic scheduling, the search space comprising a plurality of resource elements, and the PDCCH including both a C-RNTI for persistent scheduling and resource allocation information set to a predetermined value;

decoding, by the mobile station, the PDCCH according to the C-RNTI for persistent scheduling; and

halting, by the mobile station, data transmission on persistently-allocated resources when the PDCCH includes the C-RNTI for persistent scheduling and the resource allocation information has been set to the predetermined value.

6. The method according to claim 5, wherein the search space includes a plurality of candidate positions for placement of the PDCCH.

7. A mobile station, comprising at least one processor and a memory coupled to the processor, wherein the processor is configured to:

search for a physical downlink control channel (PDCCH) in a search space, the search space being located by the mobile station apparatus according to a cell-radio network temporary identity (C-RNTI) for dynamic scheduling, the PDCCH being transmitted by a base station in the search space, the search space comprising a plurality of resource elements, and the PDCCH including both a C-RNTI for persistent scheduling and resource allocation information,

decode the PDCCH according to the C-RNTI for persistent scheduling; and

halt data transmission on persistently-allocated resources when the PDCCH includes the C-RNTI for persistent scheduling and the resource allocation information has been set to a predetermined value.

8. The mobile station according to claim 7, wherein the search space includes a plurality of candidate positions for placement of the PDCCH.

9. A method of instructing data transmission, comprising:

setting a cell-radio network temporary identity (C-RNTI) for dynamic scheduling;

setting a C-RNTI for persistent scheduling;

setting resource allocation information to a predetermined value; and

transmitting a physical downlink control channel (PDCCH) in a search space, the search space comprising a plurality of resource elements, and the PDCCH including both the C-RNTI for persistent scheduling and the resource allocation information,

wherein the PDCCH is designated to be searched in the search space, the search space being located by a mobile station according to the C-RNTI for dynamic scheduling and to be decoded by the mobile station according to the C-RNTI for persistent scheduling, and the predetermined value of the resource allocation information is designated to direct the mobile station to halt data transmission on persistently-allocated resources.

10. The method according to claim 9, wherein the search space includes a plurality of candidate positions for placement of the PDCCH.

11. A base station, comprising at least one processor and a memory coupled to the processor, wherein the processor is configured to:

set a cell-radio network temporary identity (C-RNTI) for dynamic scheduling;

set a C-RNTI for persistent scheduling;

set resource allocation information to a predetermined value; and

transmit a physical downlink control channel (PDCCH) in a search space, the search space comprising a plurality of resource elements, and the PDCCH including both the C-RNTI for persistent scheduling and the resource allocation information,

wherein the PDCCH is designated to be searched in the search space, the search space being located by a mobile station according to the C-RNTI for dynamic scheduling and to be decoded by the mobile station according to the C-RNTI for persistent scheduling, and

wherein the predetermined value of the resource allocation information is designated to direct the mobile station to halt data transmission on persistently-allocated resources.

12. The base station according to claim 11, wherein the search space includes a plurality of candidate positions for placement of the PDCCH.