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.
Abstract:
A method and system for providing an enhanced sleep mode for remote units in a radiocommunication system are described. Measurement periodicity for control channels of neighboring cells is optimized. Paging frame classes can also be temporarily modified to extend sleep periods.
Abstract:
A method for transmitting messages using an efficient communications link protocol over an air interface of a cellular communications system (Fig. 7) is disclosed. A frame in the protocol is divided into a plurality of sections including a header section (BU) and data section (DATA). The header section contains a field which indicates what type of information is contained in the frame.
Abstract:
A communications system in which information is transmitted in succesive time slots grouped into a plurality of superframes which are, in turn, grouped into a plurality of hyperframes. A remote station is assigned to one of the time slots in each of the superframes for paging the remote station, each hyperframe including at least two superframes, and the information sent in the assigned time slot in one superframe in each hyperframe is repeated in the assigned time slot in the other superframe(s) in each hyperframe. Each hyperframe can include a plurality of time slots used for sending paging messages to remote stations, grouped into a plurality of succesive paging frames, and the time slot to which the remote station is assigned is included once in every paging frame. Also, each superframe may include time slots comprising a logical channel for broadcast control information and time slots comprising a logical paging channel.
Abstract:
A COMMUNICATIONS SYSTEM IN WHICH INFORMATION IS TRANSMITTED IN SUCCESSIVE TIME SLOTS GROUPED INTO A PLURALITY OF SUPERFRAMES WHICH ARE, IN TURN, GROUPED INTO A PLURALITY OF HYPERFRAMES. A REMOTE STATION(120) IS ASSIGNED TO ONE OF THE TIME SLOTS IN EACH OF THE SUPERFRAMES FOR PAGING THE REMOTE STATION, EACH HYPERFRAMES INCLUDING AT LEAST SUPERFRAMES, AND THE INFORMATION SENT IN THE ASSIGNED TIME SLOT IN ONE SUPERFRAMES IN EACH HYPERFRAME IS REPEATED IN THE ASSIGNED TIME SLOT IN THE OTHER SUPERFRAME(S) IN EACH HYPERFRAME. EACH SUPERFRAME CAN INCLUDE A PLURALITY OF TIME SLOTS USED FOR SENDING PAGING MESSAGES TO REMOTE STATION(120), GROUPED INTO A PLURALITY OF SUCCESSIVE PAGING FRAMES, AND THE TIME SLOT TO WHICH THE REMOTE STATION IS ASSIGNED IS INCLUDED ONCE IN EVERY PAGING FRAME. ALSO, EACH SUPERFRAME MAY INCLUDE TIME SLOTS COMPRISING A LOGICAL CAHNNEL FOR BROADCAST CONTROL INFORMATIONAND TIME SLOTS COMPRISING A LOGICAL PAGING CHANNEL. INFORMATION SENT IN THE ASSIGNED TIME SLOTS MAY DIRECT THE REMOTE STATION(120) TO READ THE BROADCAST CONTROL INFORMATION, AND THE INFORMATION MAY HAVE BEEN ENCODED ACCORDING TO AN ERROR CORRECTING CODE AND INCLUDE A PLURALITY OF BITS HAVING POLARITIES THAT ARE INVERSES OF CYCLIC REDUNDANCY CHECK BITS PRODUCED BY THE ENCODING. ALSO, THE BROADCAST CONTROL INFORMATION MAY COMPRISE SPECIAL MESSAGES THAT ARE INCLUDED IN RESPECTIVE TIME SLOTS COMPRISING A LOGICAL SPECIAL MESSAGE CHANNEL, THE TIME SLOTS OF THE SPECIAL MESSAGE CHANNEL MAY BE GROUPED IN SUCCESIVE SMS FRAMES, AND THE SMS FRAMES MAY BE SYNCHRONIZED TO START WITH A START OF A SUPERFRAME.(FIG 5)
Abstract:
A communications system in which information is transmitted in a plurality of time slots grouped into a plurality of superframes which are, in turn, grouped into a plurality of paging frames. A remote station receives paging messages once in each paging frame.
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.