RACH communication in cellular system
First Claim
Patent Images
1. A method, comprising:
- assigning, by a network element of a cellular communication system, the same random access parameters concurrently to a plurality of terminal devices; and
assigning a different random access transmission opportunity to said plurality of terminal devices so as to multiplex random access transmissions of said plurality of terminal devices, wherein the random access transmission opportunity identifies each one of the plurality of terminal devices using the same random access parameters.
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Abstract
A solution for sharing random access parameters is provided. A plurality of terminal devices shares the same random access parameters, e.g. the random access preamble sequence, and different transmission opportunities are assigned to the terminal devices. The different transmission opportunities are used to distinguish the terminal devices in the random access procedure.
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Citations
25 Claims
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1. A method, comprising:
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assigning, by a network element of a cellular communication system, the same random access parameters concurrently to a plurality of terminal devices; and assigning a different random access transmission opportunity to said plurality of terminal devices so as to multiplex random access transmissions of said plurality of terminal devices, wherein the random access transmission opportunity identifies each one of the plurality of terminal devices using the same random access parameters. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method, comprising:
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employing shared random access parameters in a terminal device of a cellular communication system, wherein the same random access parameters are allocated simultaneously to at least one other terminal device; receiving a random access transmission opportunity allocation according to a defined opportunity and for order for random access transmission, wherein the random access transmission opportunity is multiplexed with random access transmission opportunities of the at least one other terminal device utilizing said shared random access parameters, and wherein the random access transmission opportunity identifies the terminal device from the at least one other terminal device using the same random access parameters; and causing the terminal device to carry out a random access transmission according to the received random access transmission opportunity and by using said shared random access parameters. - View Dependent Claims (8, 9, 10, 11)
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12. An apparatus comprising:
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at least one processor; and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to assign the same random access parameters concurrently to a plurality of terminal devices of a cellular communication system, and to assign different random access transmission opportunities to said plurality of terminal devices so as to multiplex random access transmissions of said plurality of terminal devices, wherein the random access transmission opportunity identifies each one of the plurality of terminal devices using the same random access parameters. - View Dependent Claims (13, 14, 15, 16, 17, 23)
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18. An apparatus comprising:
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at least one processor; and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to; employ shared random access parameters in a terminal device of a cellular communication system, wherein the same random access parameters are allocated simultaneously to at least one other terminal device; receive a random access transmission opportunity allocation according to a defined opportunity and/or order for random access transmission, wherein the random access transmission opportunity is multiplexed with random access transmission opportunities of the at least one other terminal device utilizing said shared random access parameters, and wherein the random access transmission opportunity identifies the terminal device from the at least one other terminal device using the same random access parameters; and cause the terminal device to carry out a random access transmission according to the received random access transmission opportunity and by using said shared random access parameters. - View Dependent Claims (19, 20, 21, 22)
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24. A computer program product embodied on a distribution medium readable by a computer and comprising program instructions which, when loaded into an apparatus, execute a computer process comprising:
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assigning the same random access parameters concurrently to a plurality of terminal devices of a cellular communication system; and assigning a different random access transmission opportunity to said plurality of terminal devices so as to multiplex random access transmissions of said plurality of terminal devices, wherein the random access transmission opportunity identifies each one of the plurality of terminal devices using the same random access parameters.
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25. A computer program product embodied on a distribution medium readable by a computer and comprising program instructions which, when loaded into an apparatus, execute a computer process comprising:
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employing shared random access parameters in a terminal device of a cellular communication system, wherein the same random access parameters are allocated simultaneously to at least one other terminal device; receiving a random access transmission opportunity allocation according to a defined opportunity and/or order for random access transmission, wherein the random access transmission opportunity is multiplexed with random access transmission opportunities of the at least one other terminal device utilizing said shared random access parameters, and wherein the random access transmission opportunity identifies the terminal device from the at least one other terminal device using the same random access parameters; and causing the terminal device to carry out a random access transmission according to the received random access transmission opportunity and by using said shared random access parameters.
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Specification