Method, device and communication network for avoiding collisions in radio communication
First Claim
1. A method for avoiding collisions between time divided two-way communications provided between a mobile station and a base station of a telecommunication network, wherein first messages are sent in a first direction of communication in a first channel from the mobile station to the base station, and second messages are sent in a second, opposite direction of communication in a second channel from the base station to the mobile station, the method comprising the steps of:
- after an individual one of the first messages sent from the mobile station is received by the base station,detecting within the base station the first channel used in the first direction of communication based on an identifier of the mobile station included in one of the first messages received by the base station;
based upon the detecting step, selecting as the second channel for the second direction of communication another channel which does not overlap the first channel; and
communicating the selected second channel from the base station to the mobile station.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a method, device (MS, BTS, GSN) and telecommunication network for avoiding collisions in time divided two-way radio communication, in which messages are transmitted in a first communication direction in a first time slot and in a second opposite communication direction in a second time slot. In the method, device (MS, BTS, GSN) and telecommunication network according to the invention the first time slot in the first direction of communication is detected and, based upon the detection, such a time slot is selected for the second time slot which will not overlap the first time slot.
97 Citations
19 Claims
-
1. A method for avoiding collisions between time divided two-way communications provided between a mobile station and a base station of a telecommunication network, wherein first messages are sent in a first direction of communication in a first channel from the mobile station to the base station, and second messages are sent in a second, opposite direction of communication in a second channel from the base station to the mobile station, the method comprising the steps of:
after an individual one of the first messages sent from the mobile station is received by the base station, detecting within the base station the first channel used in the first direction of communication based on an identifier of the mobile station included in one of the first messages received by the base station; based upon the detecting step, selecting as the second channel for the second direction of communication another channel which does not overlap the first channel; and communicating the selected second channel from the base station to the mobile station. - View Dependent Claims (2, 3, 4, 5, 6)
- 7. A mobile station for time divided two-way communication with a base station in a telecommunication network, wherein within the telecommunication network first messages are sent in a first channel in a first direction of communication from the base station to the mobile station, wherein second messages are sent in a second channel in a second, opposite direction of communication from the mobile station to the base station, and wherein said first and second channels are allocated within the telecommunication network in such a manner that said first and second channels have a non-overlapping relationship, said mobile station comprising first communication means for communicating with the base station in the first direction of communication using the first channel, second communication means for communicating with the base station in the second direction of communication using the second channel, and means for informing the telecommunication network of a communication capability of the mobile station for providing the telecommunication network with an indication that the mobile station is capable of one of communicating in the first and second channels at different times only, or simultaneously communicating in the first channel and the second channel.
-
11. A device for providing time divided two-way communication with a mobile station in a telecommunication network, wherein within the telecommunication network first messages are sent in a first channel in a first direction of communication from the mobile station to the device, and second messages are sent in a second channel in a second, opposite direction of communication from the device to the mobile station, said device comprising:
-
first communication means for communicating with the mobile station in the first direction of communication using the first channel; second communication means for communicating with the mobile station in the second direction of communication using the second channel; means for communicating to the mobile station at least one channel allocated for the mobile station as the first channel for enabling the mobile station to communicate with the device in the first direction of communication; means for detecting said first channel used in the first direction of communication by detecting the identity of the mobile station based on an individual one of the first messages received by the device from the mobile station; means for selecting as said second channel for the second direction of communication from the device to the mobile station, another channel which does not overlap the first channel detected by said detecting means; and means for communicating the second channel to the mobile station. - View Dependent Claims (12, 13, 14, 15, 16)
-
-
17. A telecommunication network comprising a support node, a base station, and a mobile station, wherein for providing time divided two-way communications, said telecommunication network comprises means for communicating in a first direction of communication using a first channel, means for communicating in a second direction of communication using a second channel, and means for communicating to the mobile station at least one channel allocated for the mobile station as the first channel, and wherein said telecommunication network further comprises:
-
means for detecting said first channel used in the first direction of communication by detecting the identity of the mobile station based on a message received from the mobile station; means for selecting as said second channel for the second direction of communication, another channel which does not overlap said first channel; and means for communicating the second channel to the mobile station. - View Dependent Claims (18, 19)
-
Specification