Abstract:
A user selects (402) a first communication device (122) from a plurality of terminal devices capable of supporting differing sets of communication features. The user then conveys (404) a user identity to the first communication device. The first communication device then conveys (406) the user identity and a device description describing the first communication device and the communication features supported by the first communication device to a bearer service (116) through which the first communication device communicates. The bearer service then conveys (408) the user identity and the device description, along with a bearer description describing characteristics of the bearer service, to a registry controller (112). Thereafter, the registry controller provides (418) communications to the user in accordance with the user identity, the device description, and the bearer description.
Abstract:
A communication system that provides TDM and FDM communications between communication units. At least two control slots are provided in each TDM frame window to provide communication control information such as channel assignment information.
Abstract:
Method and apparatus for facilitating communication of information in a system without the use of a baseband hopping unit, by sharing a common TDM bus between a plurality of radio communication units, processing units, and information links, where the processing units extract traffic channel information, packetize and/or unpacketize the information, and return same back to the common bus for retrieval by the information links or radio communication units.
Abstract:
A communication system that provides TDM and FDM communications between communication units. At least two control slots are provided in each TDM frame window to provide communication control information such as channel assignment information.
Abstract:
In a TDMA cellular network, there is provided a mechanism for shared-carrier frequency-hopping. It comprises: allocating on a frame basis within a reuse diameter to one coverage area during certain timeslot(s) at least one from a pool of TDM-frame-hopped carriers and allocating on a frame basis within that carrier reuse diameter to another coverage area during certain other, substantially non-overlapping timeslot(s) that frame-hopped carrier, all in substantially non-interfering time-synchronism with any proximal reuse of that carrier, whereby the advantages of frequency hopping are obtained. Stated differently, it comprises: at one instant in time, allocating within a reuse diameter to one coverage area at least one of a plurality of hopped carriers and at that same instant in time, allocating within that carrier reuse diameter to another coverage area another of that plurality of hopped carriers, all in time-synchronism with any proximal reuse of that carrier. The control and access carriers may also be included in the hopping pool, causing certain timeslots to be hopped on a sequence different from the others. The pool of hopped carriers is further apportioned among co-located sites into hopping groups, thereby reducing intra-system synchronization requirements. To solve the near/far problem, TDM timeslots bordering hopping boundaries are preferentially allocated to less distant mobile users.
Abstract:
Method and apparatus for facilitating communication of information in a system without the use of a baseband hopping unit, by sharing a common TDM bus between a plurality of radio communication units, processing units, and information links, where the processing units extract traffic channel information, packetize and/or unpacketize the information, and return same back to the common bus for retrieval by the information links or radio communication units.
Abstract:
IN A TDMA CELLULAR NETWORK, THERE IS PROVIDED A MECHANISM FOR SHARED-CARRIER FREQUENCY HOPPING. IT IS CHARACTERIZED BY; ALLOCATING ON A FRAME BASIS (TO; SLOTS 0-7) WITHIN A REUSE DIAMETER (A/A'') TO ONE COVERAGE AREA (A) DURING CERTAIN TIMESLOT(S) AT LEAST ONE FROM A POOL OF TDM-FRAME HOPPED CARRIERS(A-E) AND ALLOCATING ON A FRAME BASIS WITHIN THAT CARRIER REUSE DIAMETER (A/A'') TO ANOTHER COVERAGE AREA (B) DURING CERTAIN OTHER, SUBSTANTIALLY NON-OVERLAPPING TIMESLOT(S) THAT FRAME HOPPED CARRIER, ALL IN SUBSTANTIALLY NON-INTERFERING TIME-SYNCHRONISM WITH ANY PROXIMAL REUSE (A'') OF THAT CARRIER,WHEREBY THE ADVANTAGE OF FREQUENCY HOPPING ARE OBTAINED. STATED DIFFERENTLY, IT IS CHARACTERIZED BY: AT ONE INSTANT IN TIME, ALLOCATING WITHIN A REUSE DIAMETER (A/A'') TO ONE COVERAGE AREA(A) AT LEAST ONE OF A PLURALITY OF HOPPED CARRIERS AND AT THAT SAME INSTANT IN TIME, ALLOCATING WITHIN THAT CARRIER REUSE DIAMETER CARRIERS TO ANOTHER COVERAGE AREA (B) ANOTHER OF THAT PLURALITY OF HOPPED CARRIERS,ALL IN TIME-SYNCHRONISM WITH ANY PROXIMAL REUSE (A'') OF THAT CARRIER. THE CONTROL AND ACCESS CARRIERS (E.G., SLOT 0 F/G) MAY ALSO BE INCLUDED IN THE HOPPING POOL, CAUSING CERTAIN TIMESLTS (SLOT 0) TOBE HOPPED ON A SEQUENCE DIFFERENT FROM THE OTHERS. THE POOL OF HOPPED CARRIERS IS FURTHER OPPORTIONED AMONG CO-LOCATED SITES (A/B/C) INTO HOPING GROUPS (U/V/W, X/Y/Z) THEREBY REDUCING INTRA-SYSTEM SYNCHRONIZATION REQUIREMENTS. TO SOLVE THE NEAR/FAR PROBLEM, TDM TIMESLOTS BORDERING HOPPING BOUNDARIES (SLOT 0, 1 OR 7) ARE PREFERENTIALLY ALLOCATED TO LESS DISTANT MOBILE USERS.(FIG 1)
Abstract:
Method and apparatus for facilitating communication of information in a system without the use of a baseband hopping unit, by sharing a common TDM bus between a plurality of radio communication units, processing units, and information links, where the processing units extract traffic channel information, packetize and/or unpacketize the information, and return same back to the common bus for retrieval by the information links or radio communication units.