Time division multiple access radio system, method for intracell capacity allocation, and method for performing an intra-cell handover

Claim 1

A method for local intracell radio capacity allocation of a cell in a time division multiple access (TDMA) radio system where a transmission time of each of a plurality of mobile stations is advanced in relation to a base station of the cell by a timing advance which compensates for the respective transmission delay caused by a distance between the base station and each of the respective mobile stations, comprising: allocating a first part of the radio capacity of the cell to serve only within a first given timing advance range and thereby mobile stations located within a first given area of the cell, and allocating a second part of the radio capacity of the cell to serve only or primarily within a second given timing which is different from said first timing advance range, and thereby mobile stations located within a second given area of the cell, wherein said allocating a first part and said allocating a second part of the radio capacity of the cell comprise allocating at least one transceiver comprising said first part, and allocating at least another transceiver comprising said second part.

Claim 2

A method for local intracell radio capacity allocation of a cell in a time division multiple access (TDMA) radio system where a transmission time of each of a plurality of mobile stations is advanced in relation to a base station of the cell by a timing advance which compensates for the respective transmission delay caused by a distance between the base station and each of the respective mobile stations, comprising: allocating a first part of the radio capacity of the cell to serve only within a first given timing advance range and thereby mobile stations located within a first given area of the cell, and allocating a second part of the radio capacity of the cell to serve only or primarily within a second given timing which is different from said first timing advance range, and thereby mobile stations located within a second given area of the cell, wherein said allocating a first part and said allocating a second part of the radio capacity of the cell comprise allocating at least one transceiver comprising said first part, and allocating at least another transceiver comprising said second part.

Claim 7

A method for performing an intracell handover in a cell of a time division multiple access (TDMA) radio system where a transmission time of each of a plurality of mobile stations is advanced in relation to a base station of the cell by a timing advance which compensates for a respective transmission delay caused by a distance between the base station and each of the respective mobile stations, comprising: allocating a first group of traffic channels of the cell to serve only within a first timing advance range and thereby mobile stations located within a first area of the cell, said first group of traffic channels being provided by at least one transceiver, allocating a second group of traffic channels of the cell to serve only within a second timing advance range, which is different from said first timing advance range, and thereby mobile stations located within a second area of the cell, the first and the second timing advance ranges partially overlapping each other, and said second group of traffic channels being provided by at least another transceiver, monitoring the respective timing advances of respective ones of said mobile stations, performing a handover of one of said mobile stations between the first and the second traffic channel group based on the timing advance assigned to the respective mobile station.

Claim 8

A method for performing an intracell handover in a cell of a time division multiple access (TDMA) radio system where a transmission time of each of a plurality of mobile stations is advanced in relation to a base station of the cell by a timing advance which compensates for a respective transmission delay caused by a distance between the base station and each of the respective mobile stations, comprising: allocating a first group of traffic channels of the cell to serve only within a first timing advance range and thereby mobile stations located within a first area of the cell, said first group of traffic channels being provided by at least one transceiver, allocating a second group of traffic channels of the cell to serve only within a second timing advance range, which is different from said first timing advance range, and thereby mobile stations located within a second area of the cell, the first and the second timing advance ranges partially overlapping each other, and said second group of traffic channels being provided by at least another transceiver, monitoring the respective timing advances of respective ones of said mobile stations, performing a handover of one of said mobile stations between the first and the second traffic channel group based on the timing advance assigned to the respective mobile station.

Claim 18

A method for local intracell radio capacity allocation of a cell having a respective whole area, in a time division multiple access (TDMA) radio system where a transmission time of each of a plurality of mobile stations is advanced in relation to a base station of the cell by a timing advance which compensates for a respective transmission delay caused by a distance between the base station and each of the respective mobile stations, comprising: allocating a first part of the radio capacity of the cell to serve within said whole area of the cell; and allocating a second part of the radio capacity of the cell to serve only or primarily within a given timing advance range and thereby mobile stations located within a given area of the cell which is smaller than said whole area of the cell, wherein said allocating of said second part of the radio capacity includes allocating said second part of the radio capacity to serve within said given timing advance range during predetermined traffic-peak situations, and allocating said second part of the radio capacity to serve the whole area of the cell at other times.

Claim 19

A method for local intracell radio capacity allocation of a cell having a respective whole area, in a time division multiple access (TDMA) radio system where a transmission time of each of a plurality of mobile stations is advanced in relation to a base station of the cell by a timing advance which compensates for a respective transmission delay caused by a distance between the base station and each of the respective mobile stations, comprising: allocating a first part of the radio capacity of the cell to serve within said whole area of the cell; and allocating a second part of the radio capacity of the cell to serve only or primarily within a given timing advance range and thereby mobile stations located within a given area of the cell which is smaller than said whole area of the cell, wherein said allocating of said second part of the radio capacity includes allocating said second part of the radio capacity to serve within said given timing advance range during predetermined traffic-peak situations, and allocating said second part of the radio capacity to serve the whole area of the cell at other times.

Claim 22

A method for local intracell radio capacity allocation of a cell in a time division multiple access (TDMA) radio system where a transmission time of each of a plurality of mobile stations is advanced in relation to a base station of the cell by a timing advance which compensates for a respective transmission delay caused by a distance between the base station and each of the respective mobile stations, comprising the steps as the steps of: determining a time advance value for a mobile station; checking whether the determined timing advance is within a first given timing advance range, or within a second given timing advance range; and allocating, to the mobile station, a radio resource among a first part of the radio capacity of the cell assigned to serve a first given area of the cell, if the determined timing advance falls within said first given timing advance range, but allocating to the mobile station a radio resource among a second part of the radio capacity of the cell assigned to serve a second given area of the cell, if the determined timing advance falls within said second given timing advance range, wherein said allocating the radio resource among the first part and said allocating the radio resource among the second part of the radio capacity of the cell comprise allocating at least one transceiver comprising said first part, and allocating at least another transceiver comprising said second part.

Claim 23

A method for local intracell radio capacity allocation of a cell in a time division multiple access (TDMA) radio system where a transmission time of each of a plurality of mobile stations is advanced in relation to a base station of the cell by a timing advance which compensates for a respective transmission delay caused by a distance between the base station and each of the respective mobile stations, comprising the steps as the steps of: determining a time advance value for a mobile station; checking whether the determined timing advance is within a first given timing advance range, or within a second given timing advance range; and allocating, to the mobile station, a radio resource among a first part of the radio capacity of the cell assigned to serve a first given area of the cell, if the determined timing advance falls within said first given timing advance range, but allocating to the mobile station a radio resource among a second part of the radio capacity of the cell assigned to serve a second given area of the cell, if the determined timing advance falls within said second given timing advance range, wherein said allocating the radio resource among the first part and said allocating the radio resource among the second part of the radio capacity of the cell comprise allocating at least one transceiver comprising said first part, and allocating at least another transceiver comprising said second part.

Claim 24

A method for local intracell radio capacity allocation of a cell in a time division multiple access (TDMA) radio system where a transmission time of each of a plurality of mobile stations is advanced in relation to a basic station of the cell by a timing advance which compensates for a respective transmission delay caused by a distance between the base station and each of the respective mobile stations, comprising: allocating a first part of a traffic channel capacity of the cell to serve only within a first given timing advance range and thereby mobile stations located within a first given area of the cell, and allocating a second part of the traffic channel capacity of the cell to serve only or primarily within a second given timing which is different from said first timing advance range, and thereby mobile stations located within a second given area of the cell, said allocating a first part and said allocating a second part of the traffic channel capacity of the cell comprise allocating at least one transceiver comprising said first part, and allocating at least another transceiver comprising said second part.

Claim 25

A method for local intracell radio capacity allocation of a cell in a time division multiple access (TDMA) radio system where a transmission time of each of a plurality of mobile stations is advanced in relation to a basic station of the cell by a timing advance which compensates for a respective transmission delay caused by a distance between the base station and each of the respective mobile stations, comprising: allocating a first part of a traffic channel capacity of the cell to serve only within a first given timing advance range and thereby mobile stations located within a first given area of the cell, and allocating a second part of the traffic channel capacity of the cell to serve only or primarily within a second given timing which is different from said first timing advance range, and thereby mobile stations located within a second given area of the cell, said allocating a first part and said allocating a second part of the traffic channel capacity of the cell comprise allocating at least one transceiver comprising said first part, and allocating at least another transceiver comprising said second part.

Claim 28

A method for performing an intracell handover in a cell of a time division multiple access (TDMA) radio system where a transmission time of each of a plurality of mobile stations is advanced in relation to a base station of the cell by a timing advance which compensates for a respective transmission delay caused by a distance between the base station and each of the respective mobile stations, comprising the steps of: allocating a first group of traffic channels of the cell to serve only within a first timing advance range and thereby mobile stations located within a first area of the cell, allocating a second group of traffic channels of the cell to serve only within a second timing advance range, which is different from said first timing advance range, and thereby mobile stations located within a second area of the cell, the first and the second timing advance ranges partially overlapping each other, monitoring the respective tiring advances of respective ones of said mobile stations, performing a handover of one of said mobile stations between the first and the second traffic channel group based on the timing advance assigned to the respective mobile station, wherein said first channel group and said second channel group provide like numbers of TDMA time slots per frame allocated to mobile stations, respectively, within said first area and said second area.

Claim 29

A method for performing an intracell handover in a cell of a time division multiple access (TDMA) radio system where a transmission time of each of a plurality of mobile stations is advanced in relation to a base station of the cell by a timing advance which compensates for a respective transmission delay caused by a distance between the base station and each of the respective mobile stations, comprising the steps of: allocating a first group of traffic channels of the cell to serve only within a first timing advance range and thereby mobile stations located within a first area of the cell, allocating a second group of traffic channels of the cell to serve only within a second timing advance range, which is different from said first timing advance range, and thereby mobile stations located within a second area of the cell, the first and the second timing advance ranges partially overlapping each other, monitoring the respective tiring advances of respective ones of said mobile stations, performing a handover of one of said mobile stations between the first and the second traffic channel group based on the timing advance assigned to the respective mobile station, wherein said first channel group and said second channel group provide like numbers of TDMA time slots per frame allocated to mobile stations, respectively, within said first area and said second area.