Method and Apparatus for Acknowledging a Reception of a Data Packet in a CDMA Communication System

• US 20080212521A1
• Filed: 04/22/2008
• Published: 09/04/2008
• Est. Priority Date: 08/30/2001
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Jou, Yu-Cheun
• Granted Patent: US 8,391,189 B2
• Time in Patent Office: Days
• US Class Current: 370/320
• CPC Class Codes: H04L 1/1692 Physical properties of the supervisory signal, e.g. acknowledgement by energy bursts
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 2001/0092 Error control systems characterised by the topology of the transmission link
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/165 Combined use of TCP and UDP protocols; selection criteria therefor
• CPC Class Codes: H04W 92/20 between access points

Abstract

In a communication system (100), a method and an accompanying apparatus provide for acknowledging reception of a packet of data. A receiver (400) at a serving base station (101) receives a message on an acknowledgement channel (340) for indicating the reception of the packet of data at a mobile station (102), and may determine an erasure of the message. A non-serving base station (160) may also receive the message on the acknowledgement channel (340) from the mobile station (102), determines a value of the message, and communicates the value of the message to the serving base station (101). The serving base station (101) changes the erasure to the value of the message, and terminates a transmission of a remainder of data units of the packet of data to the mobile station (102) when the value of the message is a positive acknowledgement from the non-serving base station (160).

Claims

1. A method for receiving data in a wireless communication system, comprising:

receiving transmission of a data unit for a packet of data from a serving base station;

sending, to said serving base station and a non-serving base station, a message on an acknowledgement channel to indicate reception of said packet of data; and

receiving transmission of zero additional data unit or an additional data unit for said packet of data from said serving base station based on an erasure for said message at said serving base station and a value of said message from said non-serving base station.

2. The method as recited in claim 1, wherein said receiving transmission of zero additional data unit or an additional data unit comprises

receiving transmission of zero additional data unit for said packet of data from said serving base station based on said erasure at said serving base station and said value of a positive acknowledgement from said non-serving base station.

3. The method as recited in claim 1, wherein said receiving transmission of zero additional data unit or an additional data unit comprises

receiving transmission of an additional data unit for said packet of data from said serving base station based on said erasure at said serving base station and said value of a negative acknowledgement from said non-serving base station.

4. An apparatus for receiving data in a wireless communication system, comprising:

a receiver for receiving transmission of a data unit for a packet of data from a serving base station; and

a controller for sending, to said serving base station and a non-serving base station, a message on an acknowledgement channel to indicate reception of said packet of data; and

wherein said receiver is further for receiving transmission of zero additional data unit or an additional data unit for said packet of data from said serving base station based on an erasure for said message at said serving base station and a value of said message from said non-serving base station.

5. The apparatus as recited in claim 4, wherein said receiver is for receiving transmission of zero additional data unit for said packet of data from said serving base station based on said erasure at said serving base station and said value of a positive acknowledgement from said non-serving base station.

6. The apparatus as recited in claim 4, wherein said receiver is for receiving transmission of an additional data unit for said packet of data from said serving base station based on said erasure at said serving base station and said value of a negative acknowledgement from said non-serving base station.

7. An apparatus for receiving data in a wireless communication system, comprising:

means for receiving transmission of a data unit for a packet of data from a serving base station;

means for sending, to said serving base station and a non-serving base station, a message on an acknowledgement channel to indicate reception of said packet of data; and

means for receiving transmission of zero additional data unit or an additional data unit for said packet of data from said serving base station based on an erasure for said message at said serving base station and a value of said message from said non-serving base station.

8. The apparatus as recited in claim 7, wherein said means for receiving transmission of zero additional data unit or an additional data unit comprises

means for receiving transmission of zero additional data unit for said packet of data from said serving base station based on said erasure at said serving base station and said value of a positive acknowledgement from said non-serving base station.

9. The apparatus as recited in claim 7, wherein said means for receiving transmission of zero additional data unit or an additional data unit comprises

means for receiving transmission of an additional data unit for said packet of data from said serving base station based on said erasure at said serving base station and said value of a negative acknowledgement from said non-serving base station.