Asymmetric frequency allocation for packet channels in a wireless network
AssigneeEricsson Inc.
InventorsDayong Chen, John Diachina
Life of this patent
Estimating the term…
Abstract
Asymmetric frequency allocation for packet channels in a wireless network. Asymmetric radio spectrum allocation along with multiple duplex carrier types within a spectrum allocated in uplink and downlink blocks of frequencies provides greater capacity for downlink traffic. Each uplink block of frequencies has multiple associated downlink blocks of frequencies. When the invention is employed for packet channel operations in a TDMA-based network, the base station system can assign timeslots to the mobile station on an asymmetric carrier. The base station system also assigns a flag value to the mobile station for use in packet channel operations. In the case of GSM, the flag is an uplink state flag.
Claims28
A computer readable memory system encoded with a data structure for enabling asymmetric frequency allocation in a frequency division duplex, wireless communcation system, the data structure comprising:
- a reference to an uplink frequency block;
- and
- references to a plurality of downlink frequency blocks associated with the uplink frequency block.
A base station system for a frequency division duplex wireless communication network comprising:
- a base station controller;
- and
- at least one base station transceiver, operatively connected to and controlled by the base station controller, the base station transceiver operable to receive radio frequency signals modulated with information in at least one uplink block of frequencies, and to transmit radio frequency signals modulated with information in multiple downlink blocks of frequencies wherein a plurality of the multiple downlink blocks of frequencies are associated with one uplink block of frequencies.
A mobile station comprising:
- radio circuitry operable to transmit and receive frequency division duplex radio frequency (RF) signals;
- logic connected to the radio circuitry;
- a processor system operatively connected to the logic and controlling the logic and the radio circuitry, the processor system and logic enabling the mobile station to send the RF signals modulated with information on at least one frequency in at least one uplink block of frequencies, and receive the RF signals modulated with information on any one of multiple frequencies, each of the multiple frequencies in one of multiple downlink blocks of frequencies wherein a plurality of the multiple down link blocks of frequencies are associated with one uplink block of frequencies, so that the mobile station operates on any of multiple duplex carriers.
A method of signaling a mobile station to transmit in a frequency division duplex communication network, wherein asymmetric frequency allocation provides for multiple downlink frequencies associated with one uplink frequency, the method comprising:
- assigning timeslots to the mobile station on an asymmetric, duplex carrier including the uplink frequency and a downlink frequency;
- assigning a flag value to the mobile station;
- and
- transmitting the flag value on at least one of the multiple downlink frequencies to indicate readiness to receive a signal from the mobile station on the uplink frequency.
A method of signaling a base station system in a frequency division duplex communication network wherein asymmetric frequency allocation provides for multiple downlink frequencies associated with one uplink frequency, the method comprising:
- receiving from the base station system an assignment of timeslots on an asymmetric duplex carrier including the uplink frequency and a downlink frequency;
- receiving a notification of an assigned flag value from the base station system;
- receiving the flag value on the downlink frequency indicating availability of the base station system to receive a signal on the uplink frequency;
- and
- transmitting the signal on the uplink frequency.
Apparatus for signaling a mobile station to transmit in a frequency division duplex communication network, wherein asymmetric frequency allocation provides for multiple downlink frequencies associated with one uplink frequency, the apparatus comprising:
- means for assigning timeslots to the mobile station on an asymmetric, duplex carrier including the uplink frequency and a downlink frequency;
- means for assigning a flag value to the mobile station;
- and
- means for transmitting the flag value on at least one of the multiple downlink frequencies to indicate readiness to receive a signal from the mobile station on the uplink frequency.
Apparatus for signaling a base station system in a frequency division duplex communication network wherein asymmetric frequency allocation provides for multiple downlink frequencies associated with one uplink frequency, the apparatus comprising:
- means for receiving from the base station system an assignment of timeslots on an asymmetric duplex carrier including the uplink frequency and a downlink frequency;
- means for receiving a notification of an assigned flag value from the base station system;
- means for receiving the flag value on the downlink frequency indicating availability of the base station system to receive a signal on the uplink frequency;
- and
- means for transmitting the signal on the uplink frequency.
A computer program product for enabling a base station system to signal a mobile station to transmit in a frequency division duplex communication network, wherein asymmetric frequency allocation provides for multiple downlink frequencies associated with one uplink frequency, the computer program product comprising a computer program further comprising:
- instructions for assigning timeslots to the mobile station on an asymmetric, duplex carrier including the uplink frequency and a downlink frequency;
- instructions for assigning a flag value to the mobile station;
- and
- instructions for transmitting the flag value on at least one of the multiple downlink frequencies to indicate readiness to receive a signal from the mobile station on the uplink frequency.
A mobile station for use in a frequency division duplex communication network, wherein asymmetric frequency allocation provides for multiple downlink frequencies associated with one uplink frequency, the mobile station comprising:
- radio circuitry operable to transmit and receive frequency division duplex radio frequency (RF) signals;
- logic connected to the radio circuitry;
- a processor system operatively connected to the logic and controlling the logic and the radio circuitry, the processor system and logic enabling the mobile station to signal a base station system by performing a method further comprising:
- receiving from the base station system an assignment of timeslots on an asymmetric duplex carrier including the uplink frequency and a downlink frequency;
- receiving a notification of an assigned flag value from the base station system;
- receiving the flag value on the downlink frequency indicating availability of the base station system to receive a signal on the uplink frequency;
- and
- transmitting the signal on the uplink frequency.
Apparatus enabled by at least one processor to signal a mobile station to transmit in a frequency division duplex communication network, wherein asymmetric frequency allocation provides for multiple downlink frequencies associated with one uplink frequency, the processor programmed to:
- assign timeslots to the mobile station on an asymmetric, duplex carrier including the uplink frequency and a downlink frequency;
- assign a flag value to the mobile station;
- and
- transmit the flag value on a plurality of the multiple downlink frequencies to indicate readiness to receive a signal from the mobile station on the uplink frequency.
Dependencies are inferred from the claim text.