Automatic retransmission request

• US 5,694,391 A
• Filed: 06/07/1995
• Issued: 12/02/1997
• Est. Priority Date: 11/01/1993
• Status: Expired due to Term

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Diachina, John Walter, Andersson, H.ang.kan Clas
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): Patel, Ajit
• Application Number:
  US08/474,660
• Time in Patent Office: 909 Days
• Field of Search: 370/60, 370/94.1, 370/95.1, 370/95.2, 370/95.3, 370/85.8, 370/345, 370/346, 370/347, 370/348, 370/450, 370/449, 370/461, 370/462, 371/32, 371/33, 371/34, 340/825.08
• US Class Current: 370/346
• 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 method for communicating in a radiocommunication system comprising the step of:

sending, from a base station, within the same downlink slot, a polling request and an access response mode indicator both carried as fields within an ARQ Mode BEGIN or an ARQ Mode CONTINUE layer 2 frame, along with shared channel feedback bits carried separately from the layer 2 frame, wherein said shared channel feedback bits are used to indicate that a next uplink slot associated with said downlink slot is reserved for mobile station transmission of requested status information.

2. A method for communicating in a radiocommunication system comprising the step of:

sending, from a base station, within the same downlink slot, a polling request and an access response mode indicator carried as fields within an ARQ Mode BEGIN or an ARQ Mode CONTINUE layer 2 frame, along with shared channel feedback bits carried separately form the layer 2 frame, wherein said shared channel feedback bits are used to indicate that the mobile station must continue to monitor said shared channel feedback bits in subsequent downlink slots in order to determine which uplink slot is reserved for mobile station transmission of requested status information.