Maintaining a maintenance channel in a reverse link of a wireless communications system
First Claim
1. A mobile device comprising:
- an antenna;
transceiver circuitry operatively coupled to the antenna;
wherein the transceiver circuitry is configured to receive, over a traffic channel, data indicating an offset;
wherein the transceiver circuitry is configured to transmit a plurality of first signals over a first type of channel in first time intervals and a plurality of second signals over a second type of channel in second time intervals, wherein the first time intervals are determined based on the indicated offset and are separated by an integer number of time slots greater than one, wherein the first type of channel and the second type of channel are not transmitted in the same time intervals; and
wherein the plurality of first signals include no packet data and the plurality of second signals include packet data; and
power control circuitry configured to separately control a transmission power level of the first type of channel and the second type of channel;
wherein the transceiver circuitry is further configured to receive power commands separately for the first type of channel and the second type of channel, each separate power command including a power control value in decibels computed in a base station;
wherein the first type of channel carries information including channel quality information and resource request information.
0 Assignments
0 Petitions
Accused Products
Abstract
In a reverse link of a wireless CDMA communication system, a method of maintaining an idling mode connection between a field unit and a base transceiver station is provided using various techniques to maintain the idle mode connection at a reduced power level. A preferred embodiment computes a time slot or frame offset based on modulo function using a field unit identifier in order to distribute field unit maintenance transmissions among available slots or offsets. An alternate embodiment detects explicit signaling states changes at the physical layer and causes power target changes. A further embodiment transmits maintenance data during predetermined time intervals, coordinated between the field units and BTS, allowing power levels to be adjusted accordingly.
46 Citations
19 Claims
-
1. A mobile device comprising:
-
an antenna; transceiver circuitry operatively coupled to the antenna; wherein the transceiver circuitry is configured to receive, over a traffic channel, data indicating an offset; wherein the transceiver circuitry is configured to transmit a plurality of first signals over a first type of channel in first time intervals and a plurality of second signals over a second type of channel in second time intervals, wherein the first time intervals are determined based on the indicated offset and are separated by an integer number of time slots greater than one, wherein the first type of channel and the second type of channel are not transmitted in the same time intervals; and wherein the plurality of first signals include no packet data and the plurality of second signals include packet data; and power control circuitry configured to separately control a transmission power level of the first type of channel and the second type of channel; wherein the transceiver circuitry is further configured to receive power commands separately for the first type of channel and the second type of channel, each separate power command including a power control value in decibels computed in a base station; wherein the first type of channel carries information including channel quality information and resource request information. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method comprising:
-
receiving, over a traffic channel, by transceiver circuitry of a mobile device, data indicating an offset; transmitting, by the transceiver circuitry, a plurality of first signals over a first type of channel in first time intervals and a plurality of second signals over a second type of channel in second time intervals, wherein the first time intervals are determined based on the indicated offset and are separated by an integer number of time slots greater than one, wherein the first type of channel and the second type of channel are not transmitted in the same time intervals; wherein the first signals include no packet data and wherein the second signals include packet data; and receiving, by the transceiver circuitry, power commands separately for the first type of channel and the second type of channel, each separate power command including a power control value in decibels computed in a base station; and separately controlling, by power control circuitry of the mobile device, a transmission power level of the first type of channel and the second type of channel; wherein the first type of channel carries information including channel quality information and resource request information. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A base station comprising:
-
an antenna; transceiver circuitry configured to transmit, over a traffic channel, data indicating an offset; wherein the transceiver circuitry is further configured to receive from a mobile device a plurality of first signals over a first type of channel in first time intervals and a plurality of second signals over a second type of channel in second time intervals, wherein the first time intervals are determined based on the indicated offset and are separated by an integer number of time slots greater than one, wherein the first type of channel and the second type of channel are not transmitted in the same time intervals; and wherein the plurality of first signals includes no packet data and the plurality of second signals includes packet data; power control circuitry configured to separately control a transmission power level of the first type of channel and the second type of channel; wherein the transceiver circuitry is further configured to transmit power commands separately for the first type of channel and the second type of channel, each separate power command including a power control value in decibels computed in a base station; and wherein the first type of channel carries information including channel quality information and resource request information. - View Dependent Claims (16, 17, 18, 19)
-
Specification