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EP0428126A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Paging signal control system in mobile communication system

Assignee: NTT Docomo Inc
•
Filing: 1990-11-13
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Granted: —
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Expires: 2010-11-13
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Abstract

Abstract Mobile stations are classified into a first grouped station which is portable, and a second ungrouped station which is carried by a vehicle. A grouped station receives a part of time slots of a paging channel relating to the group which the station belongs, and an ungrouped station receives all the time slots of a paging channel. A base station having a plurality of buffer cells (1-n) relating each groups, stores the queue of the paging signals in each buffer cells, and broadcasts the content of each buffer cell in the related time slot of the paging channel. A paging signal for a grouped station is stored in the related buffer cell, and a paging signal for an ungrouped station is stored in the buffer cell which has the shortest queue. Thus, a grouped station saves battery power becasue of intermittent receive of a paging signal, while keeping short waiting time for an ungrouped station, and small call loss ratio.

Inventors

  • 👤 Tomoyuki Yamada
  • 👤 Seizo Onoe

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 13:25
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/18; H04W88/185; H04W68/00; H04W52/00; H04W52/02; H04W52/0209; H04W52/0212; H04W52/0216; H04W52/0219; Y; Y02; Y02D; Y02D30/00; Y02D30/70

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 171 words
(1) A paging control system in a mobile communication system having a plurality of mobile stations and a plurality of base stations coupled with a communication network comprising; mobile stations being classified into a first grouped station which receives a part of time slots in the waiting state, and a second ungrouped station which receives all the time slots in the waiting state, each mobile station and each base station having information whether the mobile station is a grouped station or an ungrouped station, and the group which the mobile station belongs to, a base station having a plurality of buffer cells each of which is broadcast in the related time slot in paging channel, a paging signal to a grouped station being stored in the related buffer cell, and a paging signal to an ungrouped station being stored in the buffer cell which has the shortest queue. a grouped station receiving only a part of time slot relating to own station, and an ungrouped station receiving all the time slots.
Claim 2
Dependent Claim 33 words
(2) A paging control system in a mobile communication system according to claim 1, wherein a paging signal to an ungrouped station is stored in the buffer cell which has the shortest queue.
Claim 3
Dependent Claim 37 words
(3) A paging control system in a mobile communication system according to claim 1, wherein a plurality of paging channels are provided, and an ungrouped station receives all the time slots of one of the paging channels.
Claim 4
Dependent Claim 29 words
(4) A paging system in a mobile communication system according to claim 1, wherein a base station has a table (1a) storing length of queue in each buffer cells.

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