Automatic retransmission request

• US 5,577,046 A
• Filed: 06/07/1995
• Issued: 11/19/1996
• Est. Priority Date: 11/01/1993
• Status: Expired due to Term

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Andersson, H.ang.kan C., Diachina, John W., Persson, Bengt
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): Patel, Ajit
• Application Number:
  US08/478,652
• Time in Patent Office: 531 Days
• Field of Search: 370/95.1-95.3, 370/85.8, 370/94.1, 370/94.2, 370/110.1, 370/60, 370/17, 455/63, 455/67.1, 455/69, 455/70, 371/33, 371/32, 371/34, 340/825.08
• US Class Current: 370/252
• CPC Class Codes: H04B 7/2643 using time-division multiple access [TDMA] H04B7/2615, H04B7/2618 take precedence
• CPC Class Codes: H04B 7/2656 for structure of frame, burst
• CPC Class Codes: H04L 1/1614 using bitmaps
• CPC Class Codes: H04L 1/1685 the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal
• CPC Class Codes: H04L 1/1803 Stop-and-wait protocols
• CPC Class Codes: H04L 1/1809 Selective-repeat protocols
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method for obtaining a report from a mobile station on the status of frames comprising an entire message transmitted to the mobile station is disclosed. First, a polling request is sent to the mobile station from a base station. A status report is then sent to the base station. The polling request specifies whether the mobile station should send the status report on a reservation basis (using a reserved frame) or on a contention basis (using an idle frame). The mobile station then transmits a bit map to the communication system to indicate which frames have been correctly received by the mobile station at the point when it received the polling request.

Claims

1. A base station for use in a cellular communication system, comprising:

means for transmitting a polling request to a mobile station, wherein said polling request uses a partial echo portion of shared channel feedback to indicate which mobile station is being sent said polling request;

means for receiving a bit map from said mobile station in a response to said polling request;

means for interpreting said bit map to determine which of a plurality of frames have been correctly received by said mobile station when the polling request was received.

2. A base station according to claim 1, wherein said bit map indicates whether the mobile station has correctly received up to 32 frames.