Method of managing access of an uplink channel in a telecommunication network infrastructure, computer program, and electronic module for implementing said method
Method for managing the accessibility of an uplink channel, of the control channel and/or data channel type, for a communications network infrastructure with a plurality of pieces of radio equipment (SU 1 ; SU 2 ; SU 3 ), in which the accessibility to the uplink channel is transmitted on a downlink channel of the network infrastructure to the pieces of radio equipment by means of status symbols indicating if access to the uplink channel is authorized during a timeslot. The method comprises: a receiving of a message on the uplink channel coming from a piece of radio equipment (SU 1 ), the message comprising an indicator in order to indicate a length type of the message; a reading of the indicator indicating the type of length and when the message is of the long type: a determining of the length L of the message received using a processing of a header block; a determining of the number Nb of subsequent timeslots corresponding to the determined length L, and a modification of at least one status symbol of the Nb subsequent timeslots determined.
1. A method for managing the accessibility of an uplink channel, of a control channel and/or data channel type, for a communications network infrastructure with a plurality of pieces of radio equipment, in which the accessibility to said uplink channel is transmitted on a downlink channel of said network infrastructure to said pieces of radio equipment by means of status symbols indicating if access to said uplink channel is authorised during a timeslot, the method comprising:
receiving during a first timeslot a message on the uplink channel coming from a piece of radio equipment, said message comprising an indicator in order to indicate a length type of said message followed, when said message is of the long type, by a header block,
reading of said indicator indicating the type of length and, when said message is of the long type:
modifying a status symbol of a second timeslot consecutive to the first timeslot to indicate a busy state;
determining the length of said message received using a processing of the header block;
determining a number Nb of total timeslots corresponding to said determined length;
and if the number Nb of total timeslots is greater than or equal to 3:
modifying a status symbol of the Nb−2 timeslots consecutive to the second timeslot to indicate a busy state.
2. The method according to claim 1 , wherein the duration of a timeslot is set and defined by the network infrastructure.
3. The method according to claim 2 , wherein the network infrastructure indicates the duration of a timeslot on the control channel by a state every N status symbols, said state being either idle in order to indicate to a piece of radio equipment that it can emit a message on the uplink channel, or busy in order to indicate to said radio equipment that it cannot emit on the uplink channel, the N−1 intermediate status symbols indicating an unknown state.
4. The method according to claim 1 , wherein the duration of a timeslot is variable and dynamically modified by the network infrastructure.
5. The method according to claim 4 , further comprising calculating an end of reception of said message from the length of said message and modifying the duration of the timeslot corresponding to the end of reception of said message, in such a way as to begin a new timeslot immediately after the end of reception of said message.
6. The method according to claim 1 , comprising sending by a piece of radio equipment an uplink message that is longer than the duration of a timeslot, wherein said piece of radio equipment begins the emission of said uplink message on the first timeslot and continues its emission on timeslots consecutive to said first timeslot.
7. The method according to claim 1 , comprising a step wherein the network infrastructure is waiting for a message on the uplink channel.
8. The method according to claim 1 , wherein determining the length of the message is arranged to determine the length of a message in a data protocol implementing a header block whose a field indicates the total length of the message.
9. The method according to claim 1 , wherein determining the length of the message is arranged to determine the length of a message constituted of blocks, by reading a field within a header block.
10. The method according to claim 1 , wherein the number Nb of total timeslots is determined by calculating:
Nb
=
⌈
L
/
Δ
N
*
7.5
⌉
where L is the length in bits of the message D, Δ the rate in bits per milliseconds of reception of this message, N the number of micro-timeslots per timeslot and 7.5 the duration in milliseconds of a microslot and where ┌x┐ designates the integer greater than or equal to x.
11. A communications network infrastructure with a plurality of pieces of radio equipment, implementing the method for managing accessibility according to claim 1 .
12. A non-transitory computer readable medium comprising a computer program including instructions for implementing the method for managing accessibility according to claim 1 , installed in a subsystem of a network infrastructure.
13. An electronic module implementing the method for managing accessibility according to claim 1 .
14. The non-transitory computer readable medium according to claim 12 , wherein the subsystem of the network infrastructure is a radio base station or a radio base station controller.