Radio system and methods for duplex operation

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.

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. 
     
     
       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. 
     
     
       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. 
     
     
       14. A base station in a radio system providing 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, the base station comprising:
   a first system configured to compose information of interactive communication in the first transmission direction based on information received in at least one previous frame in the second transmission direction,        a second system configured to form data frames in the first transmission direction from at least two time - adjacent subframes, each subframe comprising at least two frame addresses, and        a third system configured to transmit subframes in said first transmission direction and receive subframes in the second transmission direction in such a way that a 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.     
     
     
       15. The base station of  claim 14 , wherein the interactive transmission comprises data transmission in one direction and a data transmission acknowledgement in another transmission direction. 
     
     
       16. A mobile device in a radio system providing 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, the mobile device comprising:
   a first system configured to compose information of interactive communication in the second transmission direction based on information received in at least one previous frame in the first transmission direction,        a second system configured to form data frames in the second transmission direction from at least two time - adjacent subframes, each subframe comprising at least two frame addresses, and        a third system configured to transmit subframes in said second transmission direction and receive subframes in the first transmission direction in such a way that a 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.     
     
     
       17. The mobile device of radio system of  claim 16 , wherein the interactive transmission comprises data transmission in one direction and a data transmission acknowledgement in another transmission direction. 
     
     
       18. A device in a radio system, wherein the device provides duplex telecommunication connection in a radio connection based on a communication using data frames in a first direction and in a second direction, the device comprising:
   a first system configured to generate information of a communication in the first direction based on information received in at least one previous frame in the second direction,        a second system configured to form data frames in the first direction from at least two time - adjacent subframes, and        a third system configured to transmit subframes in said first direction and receive subframes in the second direction in such a way that a subframe in the first direction and a subframe in the second direction with allocations to the same communication do not overlap in time, but said subframes may overlap in time with subframes with allocations to another communication.     
     
     
       19. The device of  claim 18 , wherein the device is a base station. 
     
     
       20. The device of  claim 18 , wherein the device is a mobile device. 
     
     
       21. The device of  claim 18 , wherein the communication comprises data transmission in one direction and a data transmission acknowledgement message in another direction.