Radio system and methods for duplex operation

• US 6,747,966 B1
• Filed: 07/07/1999
• Issued: 06/08/2004
• Est. Priority Date: 12/31/1996
• Status: Expired

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Nokia Telecommunications Oy (Nokia Corporation)
• Inventors: Ahmavaara, Kalle
• Primary Examiner(s): Duong, Frank
• Assistant Examiner(s): Jagannathan, Melanie
• Application Number:
  US09/331,410
• Time in Patent Office: 1,798 Days
• Field of Search: 370/276, 370/280, 370/282, 370/294, 370/296, 370/442, 370/277, 370/278, 370/281, 370/295, 370/470, 370/478, 370/535, 370/395.41, 370/335-347, 455/450-454
• US Class Current: 370/337
• CPC Class Codes: H04B 1/56 with provision for simultaneous communication in two directions
• CPC Class Codes: H04J 4/00 Combined time-division and frequency-division multiplex systems H04J13/00 takes precedence ; data transmission H04L5/26; telemetry G08C15/00
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems

Abstract

A method for duplex telecommunication connection in radio connections is based on a frame-structured interactive communication and a radio system where the frame-structured interactive communication is performed in the radio connections. A means is provided for improving the use of channel resources in implementation of interactive telecommunication connection by providing an FDD connection with one or more TDD dimensions. A full-duplex frequency band is time-duplexed into two or more sub-bands in which interactive communication takes place substantially independently. Transmissions in different transmission directions in each sub-band occur at different times, but simultaneous transmission can occur in different sub-bands in different transmission directions. The message is received entirely in one transmission direction before it needs to be responded to in another transmission direction in a particular sub-band. The frequency band is utilized effectively for communication because transmission can be performed simultaneously in different sub-bands in the reverse transmission directions.

Claims

1. A method for implementing a duplex telecommunication connection in a radio connections based on interactive communication using data frames in a first transmission direction and in a reverse second transmission direction, each data frame comprising a plurality of frame addresses, and transmission capacity of each radio connection being variable by allocation of frame addresses to it, the method comprising:

composing information of interactive communication in the first transmission direction based on information transmitted in at least two frame addresses of one previous frame in the second transmission direction,

forming the data frames in the first transmission direction and in the second transmission direction from at least two adjacent subframes, each subframe comprising at least two frame addresses,

allocating the subframes in the first and second transmission direction to each interactive communication in such a way that the subframe in the first transmission direction and a subframe in the second transmission direction with allocations to the same interactive communication do not overlap in time, but said subframes may overlap in time with subframes with allocations to another interactive communication.

2. The method of claim 1, wherein the interactive transmission includes an uplink transmission of a random access burst and a downlink transmission of an access grant message as a response.

3. The method of claim 1, wherein the interactive transmission includes data transmission in one direction and a data transmission acknowledgement in another transmission direction.

4. The method of claim 1, wherein communication occurs at several connection layers whose number corresponds to number of subframes.

9. The method of claim 1 wherein the interactive transmission includes an uplink transmission of a random access burst and a downlink transmission of an access grant message as a response.

10. The method of claim 1 wherein the interactive transmission includes data transmission in one direction and a data transmission acknowledgement in another transmission direction.

11. The method of claim 1 wherein communication occurs at several connection layers whose number corresponds to a number of subframes.

12. The method of claim 1 wherein the duration of a message of said interactive communication corresponds with the cycle of the data frame it is allocated to.

13. The method of claim 1 wherein the data transmission capacity of said radio communication varies corresponding to the number of frame addresses allocated to it.

5. A radio system providing a duplex telecommunication connection in a radio connection based on interactive communication using data frames in a first transmission direction and in a reverse second transmission direction, each data frame comprising a plurality of frame addresses, and properties of each radio connection being variable by allocation of frame addresses to it, wherein the system is arranged to

compose information of interactive communication in the first transmission direction based on information transmitted in at least one previous frame in the second transmission direction,

form the data frames in the first transmission direction and in the second transmission direction from at least two time-adjacent subframes, each subframe comprising at least two frame addresses,

allocate the subframes in said first and second transmission direction to each interactive communication in such a way that the subframe in the first transmission direction and a subframe in the second transmission direction allocated with allocations to the same interactive communication do not overlap in time, but said subframes may overlap in time with subframes with allocations to another interactive communication.

6. The radio system of claim 5 wherein the interactive transmission includes uplink transmission of a random access burst and downlink transmission of an access grant message as a response.

7. The radio system of claim 5 wherein the interactive transmission comprises data transmission in one direction and a data transmission acknowledgement in another transmission direction.

8. The radio system of claim 5 wherein communication occurs at several connection layers whose number corresponds to a number of sub-bands.