METHOD FOR SENDING PACKET DATA, BASE STATION, AND MOBILE STATION

• US 20100302992A1
• Filed: 08/12/2010
• Published: 12/02/2010
• Est. Priority Date: 05/19/2009
• 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: ZHUANG, Hongcheng
• Granted Patent: US 9,167,497 B2
• Time in Patent Office: Days
• US Class Current: 370/313
• CPC Class Codes: H04L 45/745 Address table lookup; Address filtering
• CPC Class Codes: H04W 40/02 Communication route or path selection, e.g. power-based or shortest path routing
• CPC Class Codes: H04W 40/04 based on wireless node resources
• CPC Class Codes: H04W 40/10 based on available power or energy
• CPC Class Codes: H04W 40/12 based on transmission quality or channel quality
• CPC Class Codes: H04W 40/32 for defining a routing cluster membership
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method for sending packet data is provided, which includes the following steps. Packet data from a source mobile station (MS) is received. The packet data includes an identity of a destination MS. A routing cache table is searched for a path to the destination MS. An interface is selected if the path to the destination MS is found. The packet data is forwarded through the selected interface according to the found path. Other two methods for sending packet data corresponding to the method for sending packet data as well as an MS and a base station (BS) corresponding to the method for sending packet data are provided. Therefore, link processing can be performed at the MS.

Claims

1. A method for sending packet data, comprising:

receiving packet data from a source mobile station (MS), wherein the packet data comprises an identity of a destination MS;

searching a path to the destination MS in a routing cache table;

selecting an interface if the path to the destination MS is found; and

forwarding the packet data through the selected interface according to the found path.

2. The method for sending packet data according to claim 1, wherein if the path is not found, the method further comprises:

sending a virtual cluster head request to a cluster head in an adjacent sector, wherein the virtual cluster head request comprises the identity of the destination MS; and

sending the packet data to the cluster head in the adjacent sector if a virtual cluster head response sent by the cluster head in the adjacent sector is received.

3. The method for sending packet data according to claim 2, wherein the packet data further comprises a Time To Live (TTL) field, and if the virtual cluster head response sent by the cluster head in the adjacent sector is not received, the method further comprises:

subtracting 1 from a field value of the TTL field, and sending the virtual cluster head request to the cluster head in the adjacent sector, until the field value of the TTL field becomes 0.

4. The method for sending packet data according to any one of claims 1 to 3, wherein the selecting the interface comprises:

comparing resource information of a cell interface of the destination MS and resource information of an adhoc interface of the destination MS recorded in a virtual cluster table; and

selecting the cell interface if the resource information of the cell interface is better than the resource information of the adhoc interface; and

selecting the adhoc interface if the resource information of the adhoc interface is better than the resource information of the cell interface.

5. A method for sending packet data, comprising:

obtaining packet data that needs to be sent;

determining whether an access status is direct access;

if the access status is direct access, sending the packet data to a base station (BS); and

if the access status is not direct access, selecting a cluster head from a cluster head table, and sending the packet data to the cluster head.

6. The method for sending packet data according to claim 5, before the selecting the cluster head from the cluster head table, further comprising:

determining a type of a service corresponding to the packet data;

if the type of the service corresponding to the packet data is a cell access service, selecting a cell cluster head from the cluster head table; and

if the type of the service corresponding to the packet data is an adhoc access service, selecting an adhoc cluster head from the cluster head table.

7. The method for sending packet data according to claim 5 or 6, before the sending the packet data to the cluster head, further comprising:

adding a Time To Live (TTL) field in the packet data, and setting a field value of the TTL field.

8. A mobile station (MS), comprising:

a receiving unit, adapted to receive packet data from a source MS, wherein the packet data comprises an identity of a destination MS;

a searching unit, adapted to search a path to the destination MS in a routing cache table according to the identity of the destination MS received by the receiving unit;

a selecting unit, adapted to select an interface when the searching unit finds the path to the destination MS; and

a sending unit, adapted to forward the packet data through the interface selected by the selecting unit according to the path to the destination MS found by the searching unit.

9. The MS according to claim 8, wherein the sending unit is further adapted to send a virtual cluster head request to a cluster head in an adjacent sector when the searching unit search does not find the path to the destination MS, and the virtual cluster head request comprises the identity of the destination MS,

the receiving unit is further adapted to receive a virtual cluster head response sent by the cluster head in the adjacent sector, and

the sending unit is further adapted to send the packet data to the cluster head in the adjacent sector after the receiving unit receives the virtual cluster head response.

10. The MS according to claim 9, further comprising:

a calculating unit, adapted to subtract 1 from a field value of a Time To Live (TTL) field when the packet data received by the receiving unit further comprises the TTL field and the receiving unit does not receive the virtual cluster head response sent by the cluster head in the adjacent sector, and trigger the sending unit to send the virtual cluster head request to the cluster head in the adjacent sector until the field value of the TTL field becomes 0.

11. The MS according to any one of claims 10 to 12, wherein the selecting unit comprises:

a comparing unit, adapted to compare resource information of a cell interface of the destination MS and resource information of an adhoc interface of the destination MS recorded in a virtual cluster table; and

a processing unit, adapted to select the cell interface when the comparing unit determines that the resource information of the cell interface is better than the resource information of the adhoc interface, and select the adhoc interface when the comparing unit determines that the resource information of the adhoc interface is better than the resource information of the cell interface.