Method for efficient radio resource management

• US 8,150,411 B2
• Filed: 08/28/2006
• Issued: 04/03/2012
• Est. Priority Date: 08/30/2005
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Fischer, Patrick
• Primary Examiner(s): Afshar, Kamran
• Assistant Examiner(s): Zhang, Edward
• Application Number:
  US12/065,272
• Publication Number:
  US 20080220792A1
• Time in Patent Office: 2,045 Days
• Field of Search: 455/452.2, 455/68, 455/69, 455/232.1, 455/450, 455/452.1, 455/515, 370/229, 370/230, 370/231, 370/232, 370/235, 370/395.2
• US Class Current: 455/452.2
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters

Abstract

An improved admission control procedure for an admission control entity (e.g., Radio Network Controller (RNC), Node B, etc.) in a network that admits a terminal (mobile station, user equipment, etc.) having a certain receiver performance. Without improperly assuming one receiver performance or referring to a reference minimum receiver performance to calculate the resources that will be used, more accurate radio resources that should be used by the terminal when admitted to the cell can be determined by using appropriate information about the receiver performance of the terminal to be admitted.

Claims

1. A method for performing admission control of a user equipment located in a cell of a cellular network, the method comprising:

receiving, at an admission control entity of the cellular network, receiver performance data sent from the user equipment, wherein the receiver performance data indicates a receiver performance of the user equipment and comprises at least one parameter required by the user equipment;

determining, at the admission control entity, cell resources required to provide services to the user equipment according to the receiver performance;

receiving, at the admission control entity, a request message from the user equipment with the receiver performance data of the defined type; and

transmitting, by the admission control entity, a message to the user equipment, the message defining a type of the receiver performance data needed for the admission control,

wherein the request message is a cell update message, a measurement report message or an initial direct transfer message,

wherein the at least one parameter includes a first parameter comprising a Carrier Interference (C/I), a Received Energy per chip divided by a power density in a band of a pilot channel of the cell (Ec/No), or a Received Energy per bit divided by the power density in the band of the pilot channel of the cell (Eb/No),

wherein the first parameter is configured to have a predetermined Block Error Rate (BLER), a number of bits per Transmission Time Interval (TTI) and a data rate,

wherein the at least one parameter further includes at least a second parameter, a third parameter, or a fourth parameter,

wherein the second parameter comprises a total number of antennas of the user equipment, a distance between the antennas, a coupling between the antennas, or a gain compared to a reference user equipment having only one antenna,

wherein the third parameter comprises a receiver category that defines the receiver performance, a type of receiver algorithm implemented in the user equipment, or a gain compared to a reference receiver at a given Bit Error Rate (BER) and BLER, and

wherein the fourth parameter comprises a Medium Access Control (MAC) address, an International Mobile Equipment Identity (IMEI), an International Mobile Equipment Identity and Software Version number (IMEI-SV), or a model of the user equipment.

2. The method of claim 1, further comprising:

determining, at the admission control entity, whether the cell resources are available; and

allocating, at the admission control entity, the cell resources to the user equipment when the resources are available.

3. The method of claim 1, wherein the user equipment is initially in an idle mode and the user equipment transmits the receiver performance data to the admission control entity to establish a connection to the cell.

4. The method of claim 1, wherein the user equipment is initially in a connected mode in a first cell and the user equipment transmits the receiver performance data to the admission control entity to handover the connection to a second cell.

5. The method of claim 1, wherein the user equipment is initially in a connected mode in the cell and the user equipment transmits the receiver performance data to the admission control entity to carry out a state transition of the user equipment.

6. The method of claim 1, wherein the admission control entity is a node B, a Controlling Radio Network Controller (CRNC) or a Serving Radio Network Controller (SRNC) of a Universal Mobile Telecommunications System (UMTS) network.

7. The method of claim 1, further comprising determining, at the admission control entity, the receiver performance corresponding to a receiver category transmitted by the user equipment,

wherein the receiver category is included in the receiver performance data and defines the receiver performance.

8. The method of claim 1, wherein the receiver performance data further comprises a number of antennas of the user equipment, a distance between the antennas, a coupling between the antennas, and a gain compared to a reference user equipment comprising only one antenna.

9. The method of claim 1, wherein the at least one parameter is a type of receiver algorithm implemented in the user equipment, a gain compared to a reference receiver at a given Bit Error Rate (BER) and Block Error Rate (BLER), or a Channel Quality Indicator (CQI).

10. The method of claim 1 further comprising determining, at the admission control entity, the receiver performance corresponding to the at least one parameter,

wherein at least one of the at least one parameter is a first parameter identifying the user equipment or a second parameter indicating a type of the user equipment.

11. The method of claim 10, wherein:

the first parameter is a Medium Access Control (MAC) address, an International Mobile Equipment Identity (IMEI) or an International Mobile Equipment Identity and Software Version number (IMEI-SV), and

the second parameter is a model of the user equipment.

12. A cellular network for performing an admission control procedure, the cellular network comprising:

an admission control entity programmed to receive receiver performance data sent from a user equipment located in a cell of the cellular network, the receiver performance data defining a receiver performance of the user equipment and comprising at least one parameter required by the user equipment,

wherein the admission control entity is programmed to determine resources of the cell required to provide services to the user equipment according to the receiver performance,

wherein the admission control entity is configured to transmit a message to the user equipment, the message defining a type of the receiver performance data needed for the admission control,

wherein the admission control entity is configured to receive a request message from the user equipment with the receiver performance data of the defined type,

wherein the request message is a cell update message, a measurement report message, or an initial direct transfer message,

wherein the at least one parameter includes a first parameter comprising a Carrier Interference (C/I), a Received Energy per chip divided by a power density in a band of a pilot channel of the cell (Ec/No), or a Received Energy per bit divided by the power density in the band of the pilot channel of the cell (Eb/No),

wherein the first parameter is configured to have a predetermined Block Error Rate (BLER), a number of bits per Transmission Time Interval (TTI) and a data rate,

wherein the at least one parameter further includes at least a second parameter, a third parameter, or a fourth parameter,

wherein the second parameter comprises a total number of antennas of the user equipment, a distance between the antennas, a coupling between the antennas, or a gain compared to a reference user equipment having only one antenna,

wherein the third parameter comprises a receiver category that defines the receiver performance, a type of receiver algorithm implemented in the user equipment, or a gain compared to a reference receiver at a given Bit Error Rate (BER) and BLER, and

wherein the fourth parameter comprises a Medium Access Control (MAC) address, an International Mobile Equipment Identity (IMEI), an International Mobile Equipment Identity and Software Version number (IMEI-SV), or a model of the user equipment.

13. A method for performing admission control in a user equipment located in a cell of a cellular network, the method comprising:

sending a request message to an admission control entity of the cellular network with receiver performance data of the user equipment; and

receiving a message from the admission control entity, the message defining a type of the receiver performance data needed for the admission control,

wherein the receiver performance data of the defined type indicates a receiver performance of the user equipment and comprises at least one parameter set required by the user equipment,

wherein the request message is a cell update message, a measurement report message, or an initial direct transfer message,

wherein the at least one parameter set includes at least a first parameter set comprising a Carrier Interference (C/I), a Received Energy per chip divided by a power density in a band of a pilot channel of the cell (Ec/No), or a Received Energy per bit divided by the power density in the band of the pilot channel of the cell (Eb/No),

wherein the C/I, Ec/No, and the Eb/No are each configured to have a predetermined Block Rate Error (BLER), a number of bits per Transmission Time Interval (TTI), a data rate, and a Channel Quality Indicator (CQI),

wherein the at least one parameter set further includes at least a second parameter set, a third parameter set, or a fourth parameter set,

wherein the second parameter set comprises a total number of antennas of the user equipment, a distance between the antennas, a coupling between the antennas, or a gain compared to a reference user equipment having only one antenna,

wherein the third parameter set comprises a receiver category that defines the receiver performance, a type of receiver algorithm implemented in the user equipment, or a gain compared to a reference receiver at a given Bit Error Rate (BER) and BLER, and

wherein the fourth parameter set comprises a Medium Access Control (MAC) address, an International Mobile Equipment Identity (IMEI), an International Mobile Equipment Identity and Software Version number (IMEI-SV), or a model of the user equipment.