Method for coordinating at least one first transmission from a single-point transmitter to a single-point receiver and at least one second transmission from a multipoint transmitter or to a multipoint receiver in a radio communication system, network node and mobile station thereof
View Patent ↗The invention relates to a method for coordinating at least one first transmission from a multipoint transmitter or to a multipoint receiver and at least one second transmission from a single-point transmitter to a single-point receiver in a radio communication system. The method comprises the step of reserving at least one first radio resource (SI-F 1 to S 3 -F 1 , S 9 -F 1 , SI 0 -F 1 , SI-F 2 , SI-F 1 b -BW 2 to SI 0 -F 1 b -BW 2 , SI-F 2 b -BW 2 ) for the at least one first transmission for at least two serving areas of the radio communication system and further reserving at least one second radio resource (S 4 -F 1 to S 8 -F 1 , SI-F 1 b -BW 1 to SI 0 -F 1 b -BW 1 , SI-F 2 b -BW 1 , SI-F 1 b -BW 3 to SI 0 -F 1 b -BW 3 , SI-F 2 b -BW 3 ) for the at least one second transmission for the at least two serving areas). The invention further relates to a network node (NS 1 , NS 2 ) for coordinating at least one first transmission from a multipoint transmitter or to a multipoint receiver and at least one second transmission in a radio communication system and to a mobile station for use in a radio communication system.
1. A method for coordinating at least one first uplink transmission from mobile stations to a multipoint receiver comprising at least two antenna systems of a radio communication system and at least one second uplink transmission from said mobile stations to a single-point receiver being a single antenna system of said radio communication system, said method comprising reserving at least one first radio resource for said at least one first uplink transmission for at least two serving areas of said radio communication system and further reserving at least one second radio resource for said at least one second uplink transmission for said at least two serving areas,
wherein said method further comprises:
predefining at least one first power control parameter for said at least one first uplink transmission,
predefining at least one second power control parameter for said at least one second uplink transmission,
transmitting said predefined at least one first power control parameter and said predefined at least one second power control parameter to at least one of said mobile stations,
storing said predefined at least one first power control parameter and said predefined at least one second power control parameter at said at least one of said mobile stations,
transmitting an indication indicating said at least one first radio resource or said at least one second radio resource to said at least one of said mobile stations, and
applying at said at least one of said mobile stations said predefined at least one first power control parameter for said at least one first radio resource or said predefined at least one second power control parameter for said at least one second radio resource based on said received indication.
2. The method according to claim 1 , wherein said method further comprises:
receiving from at least one base station of said radio communication system status information of said at least one base station,
determining a size of said at least one first radio resource for said at least first uplink transmission, a size of said at least one second radio resource for said at least one second uplink transmission, and a cooperation area comprising said at least two serving areas based on said received status information, and
transmitting radio resource information of at least one of said reserved at least one first radio resource or of said reserved at least one second radio resource to said at least one base station serving said cooperation area.
3. The method according to claim 1 , wherein said predefined at least one first power control parameter and said predefined at least one second power control parameter are transmitted in a broadcast.
4. The method according to claim 1 , wherein said indication is an uplink resource grant.
5. The method according to claim 1 , wherein one of said predefined at least one first power control parameter and said predefined at least one second power control parameter are transmitted as an absolute value and wherein a further one of said predefined at least one first power control parameter and said predefined at least one second power control parameter is transmitted as a difference value with respect to said absolute value.
6. The method according to claim 2 , wherein said status information comprises data traffic related information and/or mobile station related information and/or base station related information.
7. The method according to claim 6 , wherein said data traffic related information comprises information of an amount of data traffic pending at at least one of said mobile stations and/or information of at least one quality of service type of said pending traffic.
8. The method according to claim 6 , wherein said mobile station related information comprises information of velocity of at least one of said mobile stations and/or information of a signal-to-interference and noise ratio of uplink signals received from said at least one of said mobile stations and/or information of power headroom of said at least one of said mobile stations.
9. The method according to claim 6 , wherein said base station related information comprises information of remaining processing capacity at said at least one base station for said at least one first uplink transmission and/or information of traffic capacity on at least one backhaul interface of said at least one base station and/or information of a predicted performance gain at said at least one base station, if a ratio of said size of said at least one first radio resource and said size of said at least one second radio resource would be changed and/or information of a current capacity utilization of said at least one first radio resource and/or said at least one second radio resource at said at least one base station.
10. The method according to claim 6 , wherein said reservation of said at least one first radio resource and said reservation of said at least one second radio resource is performed, if a number of said mobile stations applying said at least one first uplink transmission exceeds a predefined threshold.
11. A network node for coordinating at least one first uplink transmission from mobile stations to a multipoint receiver comprising at least two antenna systems of a radio communication system and at least one second uplink transmission from said mobile stations to a single-point receiver being a single antenna system of said radio communication system, said network node comprising a processor configured to:
reserve at least one first radio resource for said at least one first uplink transmission for at least two serving areas of said radio communication system and further reserve at least one second radio resource for said at least one second uplink transmission for said at least two serving areas, and
predefine at least one first power control parameter for said at least one first uplink transmission and at least one second power control parameter for said at least one second uplink transmission, and
a transmitter configured to transmit said predefined at least one first power control parameter, said predefined at least one second power control parameter and an indication indicating said at least one first radio resource or said at least one second radio resource to at least one of said mobile stations.
12. The network node according to claim 11 , wherein said network node is a base station or a network server.
13. A mobile station for use in a radio communication system, said mobile station comprising:
a receiver configured to:
receive a predefined at least one first power control parameter for at least one first uplink transmission from said mobile station to a multipoint receiver comprising at least two antenna systems of said radio communication system,
receive a predefined at least one second power control parameter for at least one second uplink transmission from said mobile station to a single-point receiver being a single antenna system of said radio communication system, and
receive an indication indicating at least one first radio resource reserved for said at least one first uplink transmission or indicating at least one second radio resource reserved for said at least one second uplink transmission,
a non-transitory computer-readable medium configured to store said predefined at least one first power control parameter and said predefined at least one second power control parameter, and
a processor configured to apply said predefined at least one first power control parameter for said at least one first radio resource or said predefined at least one second power control parameter for said at least one second radio resource based on said received indication.
14. The mobile station according to claim 13 , wherein said mobile station is a cellular telephone, a portable computer, a pocket computer, a hand-held computer, a personal digital assistant or a car-mounted mobile device.