DUPLEX OPERATION IN A CELLULAR COMMUNICATION SYSTEM

• US 20140029487A1
• Filed: 09/30/2013
• Published: 01/30/2014
• Est. Priority Date: 08/19/2005
• Status: Abandoned Application

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: BEALE, Martin Warwick, JONES, Alan E.
• Application Number:
  US14/042,136
• Publication Number:
  US 20140029487A1
• Time in Patent Office: Days
• US Class Current: 370/280
• CPC Class Codes: H04B 7/2643 using time-division multiple access [TDMA] H04B7/2615, H04B7/2618 take precedence
• CPC Class Codes: H04L 5/1438 Negotiation of transmission parameters prior to communication modified according to link quality H04L1/0001
• CPC Class Codes: H04L 5/16 Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission
• CPC Class Codes: H04W 36/16 Performing reselection for specific purposes
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 76/10 Connection setup

Abstract

A cellular communication system comprises a first base station serving at least a first user equipment. The base station comprises functionality for transmitting a base station duplex capability message to user equipments using a transmission format which is common to a plurality of duplex modes. A first user equipment comprises a transceiver which receives the base station duplex capability message. A RACH characteristics processor determines at least one transmit characteristic for an access message in response to the base station duplex capability message and a RACH transmit controller controls the transmission of an access message to the first base station in response to the at least one transmit characteristic.

Claims

1. An electronic device comprising:

circuitry configured to

receive duplex capability information including information identifying duplex modes supported by a base station, the duplex capability information being transmitted according to a signal structure common to a plurality of duplex modes; and

determine at least one characteristic for accessing the base station based on the duplex capability information.

2. The electronic device of claim 1, wherein the circuitry is further configured to:

control transmitting an access message to the base station based on the at least one characteristic.

3. The electronic device of claim 1, wherein a first duplex mode of the plurality of duplex modes is a frequency division duplex (FDD) mode and a second duplex mode of the plurality of duplex modes is a time division duplex (TDD) mode.

4. The electronic device of claim 1, wherein a first duplex mode of the plurality of duplex modes is a half-duplex mode and a second duplex mode of the plurality of duplex modes is a full-duplex mode.

5. The electronic device of claim 1, wherein the signal structure is defined by one or more common transmission parameters from the group consisting of:

a signal bandwidth;

a coding rate;

a modulation scheme;

an interleaving;

a coding scheme; and

a timing.

6. An electronic device comprising:

circuitry configured to receive duplex capability information including information identifying duplex modes supported by the base station, wherein

the duplex capability information is transmitted according to a signal structure that is common to a plurality of duplex modes that the electronic device is configured to support.

7. The electronic device of claim 6, wherein the circuitry is further configured to:

control transmitting an access message to the base station based on the at least one characteristic.

8. A communication apparatus comprising:

one or more antennas via which signals are transmitted; and

circuitry configured to

receive duplex capability information including information identifying duplex modes supported by a base station, the duplex capability information being transmitted according to a signal structure common to a plurality of duplex modes; and

determine at least one characteristic for accessing the base station based on the duplex capability information.

9. The communication apparatus of claim 8, wherein the circuitry is further configured to:

control transmitting an access message to the base station based on the at least one characteristic.

10. The communication apparatus of claim 8, wherein a first duplex mode of the plurality of duplex modes is a frequency division duplex (FDD) mode and a second duplex mode of the plurality of duplex modes is a time division duplex (TDD) mode.

11. The communication apparatus of claim 8, wherein a first duplex mode of the plurality of duplex modes is a half-duplex mode and a second duplex mode of the plurality of duplex modes is a full duplex mode.

12. The communication apparatus of claim 8, wherein the signal structure is defined by one or more common transmission parameters from the group consisting of:

a signal bandwidth;

a coding rate;

a modulation scheme;

an interleaving;

a coding scheme; and

a timing.

13. An communication apparatus, comprising:

one or more antennas via which signals are transmitted; and

circuitry configured to receive duplex capability information including information identifying duplex modes supported by the base station, wherein

the duplex capability information is transmitted according to a signal structure that is common to a plurality of duplex modes that the electronic device is configured to support.

14. The communication apparatus of claim 13, wherein the circuitry is further configured to:

control transmitting an access message to the base station based on the at least one characteristic.

15. The communication apparatus of claim 13, wherein a first duplex mode of the plurality of duplex modes is a frequency division duplex (FDD) mode and a second duplex mode of the plurality of duplex modes is a time division duplex (TDD) mode.

16. The communication apparatus of claim 13, wherein a first duplex mode of the plurality of duplex modes is a frequency division duplex (FDD) mode and a second duplex mode of the plurality of duplex modes is a time division duplex (TDD) mode.

17. The communication apparatus of claim 13, wherein a first duplex mode of the plurality of duplex modes is a half-duplex mode and a second duplex mode of the plurality of duplex modes is a full duplex mode.

18. The communication apparatus of claim 13, wherein the signal structure is defined by one or more common transmission parameters from the group consisting of:

a signal bandwidth;

a coding rate;

a modulation scheme;

an interleaving;

a coding scheme; and

a timing.