Selecting random access channels

• US 7,349,371 B2
• Filed: 08/14/2002
• Issued: 03/25/2008
• Est. Priority Date: 09/29/2000
• Status: Expired due to Term

• Current Assignee: Apple Inc.
• Original Assignee: ArrayComm LLC (Ygomi LLC)
• Inventors: Schein, Brett, Chen, John S.
• Primary Examiner(s): HO, DUC CHI
• Application Number:
  US10/218,770
• Publication Number:
  US 20030133426A1
• Time in Patent Office: 2,050 Days
• Field of Search: None
• US Class Current: 370/329
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/086 using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access

Abstract

Embodiment of the present invention can be used to select random access channels to be assigned to user terminals. In one embodiment, the invention includes a base station receiving a signal from a second radio, the received signal containing information about the second radio, and selecting one or more channels to be used by the second radio for random access to the base station using the information about the second radio. Then the base station sends a signal to the second radio, the sent signal containing information about the selected one or more channels.

Claims

1. A method comprising:

receiving a signal from a second radio at a first radio, the received signal containing information identifying the second radio, wherein the information identifying the second radio includes capability information about at least one hardware capability of the second radio, wherein the at least one hardware capability includes an indication whether the second radio is capable of hopping;

selecting one or more channels to be used by the second radio for random access to the first radio using the information identifying the second radio, wherein selecting the one or more channels comprises selecting one or more channels that do not include any channels that hop, if the received capability information indicated that the second radio is not capable of hopping; and

sending a signal from the first radio to the second radio, the sent signal containing information about the selected one or more channels.

2. A method comprising:

receiving a signal from a second radio at a first radio, the received signal containing information identifying the second radio, wherein the information identifying the second radio includes quality of service information indicating a level of service to be provided to the second radio, wherein the level of service includes a maximum level of contention on channels to be used by the second radio for random access;

selecting one or more channels to be used by the second radio for random access to the first radio using the information identifying the second radio; and

sending a signal from the first radio to the second radio, the sent signal containing information about the selected one or more channels.

3. The method of claim 2, wherein selecting the one or more channels comprises selecting one or more channels that have a level of contention at or below the indicated maximum level.

4. A communications device comprising:

a receiver to receive a signal from a radio, the received signal containing information identifying the radio including capability information about at least one hardware capability of the radio;

a processor coupled to the receiver to select one or more channels to be used by the radio for random access to the communications device using the information identifying the radio, wherein the processor selects the one or more channels by selecting one or more channels that do not include any channels that hop, if the received capability information indicates that the radio is not capable of hopping; and

a transmitter coupled to the processor to send a signal to the radio, the sent signal containing information about the selected one or more channels.

5. A communications device comprising:

a receiver to receive a signal from a radio, the received signal containing information identifying the radio including quality of service information indicating a level of service to be provided to the radio, wherein the level of service includes a maximum level of contention on channels to be used by the radio for random access;

a processor coupled to the receiver to select one or more channels to be used by the radio for random access to the communications device using the information identifying the radio; and

a transmitter coupled to the processor to send a signal to the radio, the sent signal containing information about the selected one or more channels.

6. The communications device of claim 5, wherein the processor selects the one or more channels by selecting one or more channels that have a level of contention at or below the indicated maximum level.

7. The communications device of claim 6, wherein the communications device type comprises at least one of a cellular phone, a broadband wireless web-device, a narrowband wireless web-device, a personal digital assistant (PDA), a push-and-talk device, a voice device, a data device, and a voice-and-data device.

8. The communications device of claim 6, wherein the processor selects the one or more channels by selecting one or more channels designated to be used for random access by devices characterized by the communications device type.

9. The communications device of claim 8, wherein the processor selects the one or more channels by selecting one or more channels being serviced using the partition associated with the radio.

10. A machine-readable medium having stored thereon data representing instructions that, when executed by a processor of a first radio, cause the processor to perform operations comprising:

receiving a signal from a second radio at the first radio, the received signal containing information identifying the second radio including capability information about at least one hardware capability of the second radio, wherein the at least one hardware capability includes an indication whether the second radio is capable of hopping;

selecting one or more channels to be used by the second radio for random access to the first radio using the information identifying the second radio, wherein selecting the one or more channels comprises selecting one or more channels that do not include any channels that hop, if the received capability information indicated that the second radio is not capable of hopping; and

sending a signal from the first radio to the second radio, the sent signal containing information about the selected one or more channels.

11. A machine-readable medium having stored thereon data representing instructions that, when executed by a processor of a first radio, cause the processor to perform operations comprising:

receiving a signal from a second radio at the first radio, the received signal containing information identifying the second radio including quality of service information indicating a level of service to be provided to the second radio, wherein the level of service includes a maximum level of contention on channels to be used by the second radio for random access;

selecting one or more channels to be used by the second radio for random access to the first radio using the information identifying the second radio; and

sending a signal from the first radio to the second radio, the sent signal containing information about the selected one or more channels.

12. The machine-readable medium of claim 11, wherein selecting the one or more channels comprises selecting one or more channels that have a level of contention at or below the indicated maximum level.