Wireless communication system, and base station side and user equipment side device and method
First Claim
1. An apparatus on a base station side in a wireless communication system, comprising:
- a processing unit configured toreceive a failed random access request from a user equipment, which was sent while the user equipment was in an RRC_IDLE state, wherein the failed random access request included a preamble sequence and a PRACH time-frequency resource indication which were both already received from a first successful random access request sent by another user equipment;
determine, in response to the failed random access request from the user equipment, whether the failed random access request was part of a contention-based access procedure; and
after determining the failed random access request was part of the contention-based access procedure, prepare auxiliary access information for the user equipment which was determined to have sent the second random access request which is part of the contention-based access procedure and which was determined to have included the preamble sequence and the PRACH time-frequency resource indication which were both already received from the first random access request;
wherein the auxiliary information is set so that the user equipment can use the auxiliary information in a subsequent non-contention based access request, and the auxiliary information includes a unique identification of the user equipment which sent the failed random access request for use in the subsequent non-contention based access request.
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Accused Products
Abstract
A base station side and user equipment side device and method in a wireless communication system, and a wireless communication system. The base station side device includes a processor configured to: respond to a random access request of the user equipment and determine that an access process initiated by the user equipment is a contention-based or a non-contention-based access process; and with respect to the contention-based access process, to prepare auxiliary access information for potential user equipment that has failed to access so that the user equipment that has failed to access and the base station can complete the access process based on interaction of auxiliary access information.
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Citations
20 Claims
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1. An apparatus on a base station side in a wireless communication system, comprising:
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a processing unit configured to receive a failed random access request from a user equipment, which was sent while the user equipment was in an RRC_IDLE state, wherein the failed random access request included a preamble sequence and a PRACH time-frequency resource indication which were both already received from a first successful random access request sent by another user equipment; determine, in response to the failed random access request from the user equipment, whether the failed random access request was part of a contention-based access procedure; and after determining the failed random access request was part of the contention-based access procedure, prepare auxiliary access information for the user equipment which was determined to have sent the second random access request which is part of the contention-based access procedure and which was determined to have included the preamble sequence and the PRACH time-frequency resource indication which were both already received from the first random access request; wherein the auxiliary information is set so that the user equipment can use the auxiliary information in a subsequent non-contention based access request, and the auxiliary information includes a unique identification of the user equipment which sent the failed random access request for use in the subsequent non-contention based access request. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An apparatus on a user equipment side in a wireless communication system, comprising:
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a processing unit configured to generate a random access request to initiate a contention-based access procedure, wherein the random access request was sent when the apparatus was in an RRC_IDLE state and the random access request included a preamble sequence and a PRACH time-frequency resource indication which were both already received by a base station from a first successful random access request sent by another user equipment; after failing to gain access to the base station resources, monitor for auxiliary access information from the base station; receive the auxiliary access information from the base station; and use the auxiliary information to send a subsequent non-contention based access request, wherein the auxiliary information includes a unique identification of the user equipment which sent the failed random access request for use in the subsequent non-contention based access request. - View Dependent Claims (16, 17, 18, 19)
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20. A method on a user equipment side in a wireless communication system, comprising:
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generating a random access request to initiate a contention-based access procedure, wherein the random access request was sent when the apparatus was in an RRC_IDLE state and the random access request included a preamble sequence and a PRACH time-frequency resource indication which were both already received by a base station from a first successful random access request sent by another user equipment; after failing to access to the base station resources, monitor for auxiliary access information from the base station; receive the auxiliary access information from the base station; and use the auxiliary information to send a subsequent non-contention based access request, wherein the auxiliary information includes a unique identification of the user equipment which sent the failed random access request for use in the subsequent non-contention based access request.
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Specification