H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
H04Q 7/22 (2006.01) H04B 7/15 (2006.01) H04B 7/26 (2006.01) H04L 12/28 (2006.01) H04L 12/56 (2006.01) H04Q 7/20 (2006.01) H04Q 7/30 (2006.01) H04Q 7/38 (2006.01)
Patent
CA 2325129
A mobile telephone network operating general packet radio service includes a base station (2) and a group of mobile telephones (M1 to M4). The base station (2) includes a control unit (8) which generates a succession of data packets which are transmitted along a common downlink to all the mobiles (Ml to M8). Each data packet includes a header section containing an uplink state flag identifying a first selected mobile, to poll that mobile and cause it to return a packet of data to the base station along a common uplink channel. The header also includes an uplink state flag identifying a second selected mobile and is accompanied by the identity of and time slot for a second auxiliary uplink channel for polling the second mobile to cause the second mobile to return a packet of data to the base station along said auxiliary uplink channel thereby enabling the polling of at least two mobiles using the same data packet. The polling sequence produced by the control unit (8) ensures that each mobile is polled twice during each polling cycle, once accompanied with the identity of and time slot for a secondary auxiliary uplink channel and once without.
Demetrescu Cristian
Ilas Constantin
Samaras Konstantinos
Samuel Louis Gwyn
Somerville Fiona Clare Angharad
Kirby Eades Gale Baker
Lucent Technologies Inc.
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