EP0587980A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improvements in or relating to cellular mobile radio systems
Assignee: Roke Manor Research Ltd
•
Filing: 1993-04-03
•
Granted: —
•
Expires: 2013-04-03
Abstract
Abstract A cellular mobile radio system, which is arranged to operate in accordance with a packet reservation multiple access protocol, wherein at least one time slot in each frame is designated for the transmission of access contention data which includes a field reserved for data specifying a number of information slots required by a mobile unit, and which system includes a base station adapted for operation such that consequent upon receipt of data in the said reserved field the base station is arranged to respond by allocating available slots to satisfy the requirement of the mobile unit.
Inventors
- 👤 Jonathan Mark Devile
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 17:44
CPC Classifications
H; H04; H04W; H04W74/00; H04W74/08; H04W74/0866; H04B; H04B7/00; H04B7/24; H04B7/26; H04B7/2643; H04J; H04J3/00; H04J3/02; H04J3/06; H04J3/062; H04J3/0626; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L2012/5603; H04L2012/5604; H04L2012/5607; H04W56/00; H04W56/004; H04W56/0045; H04W72/00; H04W72/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
96 words
A cellular mobile radio system, which is arranged to operate in accordance with a packet reservation multiple access protocol, wherein at least one time slot in each frame is designated for the transmission of access contention data which includes a field reserved for data specifying a number of information slots required by a mobile unit, and which system includes a base station adapted for operation such that consequent upon receipt of data in the said reserved field the base station is arranged to respond by allocating available slots to satisfy the requirement of the mobile unit.
Claim 2
Dependent Claim
96 words
A cellular mobile radio system, which is arranged to operate in accordance with a packet reservation multiple access protocol, wherein at least one time slot in each frame is designated for the transmission of access contention data which includes a field reserved for data specifying a number of information slots required by a mobile unit, and which system includes a base station adapted for operation such that consequent upon receipt of data in the said reserved field the base station is arranged to respond by allocating available slots to satisfy the requirement of the mobile unit.
Claim 3
Dependent Claim
25 words
A cellular mobile radio system as claimed in Claim 1 which operates in accordance with a PRMA protocol of the kind as herein before specified.
Claim 4
Dependent Claim
84 words
A system as claimed in Claim 1 or Claim 2, wherein consequent upon receipt of data in the said field, the base station responds to the mobile unit by transmitting timing information derived in dependence upon the time of arrival of the said data, which timing information is utilized by the mobile unit to adjust the timing of the next transmission burst of data so that the burst is fitted in an appropriate designated slot, whereby the effects of propagation delays are compensated for.
Claim 5
Independent Claim
54 words
A system as claimed in any preceding claim, wherein slot duration is adapted in dependence of the character of data to be transmitted, such that a relatively shorter slot is assigned for the transmission of small packets of information and a relatively longer slot is assigned for the transmission of larger packets of information.
Claim 6
Dependent Claim
21 words
A system as claimed in Claim 4, wherein two slot widths are provided for small and large packets of information respectively.
Claim 7
Independent Claim
60 words
A system as claimed in any preceding claim, wherein asynchronous transfer mode (ATM) cells are batched for the transmission of data, the system including an automatic repeat request (ARQ) facility, whereby repeat requests are made in respect of only those cells of a batch which are errored, as indicated by an error detector, forming a part of the ARQ system.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.