Method for predetermining resource in random access, user equipment, and base station
First Claim
1. A method for predetermining a resource in a process of random access, wherein the method comprises:
- receiving a random access preamble sent by a user equipment, and determining preamble information according to the received random access preamble, wherein the preamble information comprises one or more of the following;
the random access preamble, a random access preamble index, an index of a time resource used for transmitting the random access preamble, an index of a frequency resource used for transmitting the random access preamble, a start time resource in the time resource used for transmitting the random access preamble, and a start frequency resource used for transmitting the random access preamble;
determining a random access response (RAR) resource corresponding to the random access preamble according to a correspondence between the preamble information and RAR resource information, wherein the RAR resource information comprises one or more of the following;
the RAR resource, an RAR resource index, an index of a time resource used for transmitting an RAR message, an index of a frequency resource used for transmitting the RAR message, a start time resource in the time resource used for transmitting the RAR message, and a start frequency resource used for transmitting the RAR message, and the correspondence between the preamble information and the RAR resource information is configured using signaling or preset by a system; and
sending the RAR message corresponding to the random access preamble to the user equipment on the RAR resource corresponding to the random access preamble;
wherein the correspondence between the preamble information and the RAR resource information comprises;
the RAR resource index corresponding to the random access preamble index of the random access preamble mod a quantity of RAR resources configured using signaling or preset by the system, wherein mod denotes a modulo operation.
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Accused Products
Abstract
Embodiments of the present disclosure relate to the communications field, and provide a method for predetermining a resource in random access, user equipment, and a base station, so that a process of random access can be simplified, and reliability of information transmission in the process of random access can be improved. The method is: an implicit manner is used to indicate some or all of identifiers of a random access preamble index; so that a message in a procedure of random access is simplified, and at the same time resources used for transmitting an RAR reply message, transmitting a contention resolution message, retransmitting an RAR reply message, and retransmitting a contention resolution message are configured by using signaling or preset by a system. The embodiments of the present disclosure are used for a process of random access.
12 Citations
16 Claims
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1. A method for predetermining a resource in a process of random access, wherein the method comprises:
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receiving a random access preamble sent by a user equipment, and determining preamble information according to the received random access preamble, wherein the preamble information comprises one or more of the following;
the random access preamble, a random access preamble index, an index of a time resource used for transmitting the random access preamble, an index of a frequency resource used for transmitting the random access preamble, a start time resource in the time resource used for transmitting the random access preamble, and a start frequency resource used for transmitting the random access preamble;determining a random access response (RAR) resource corresponding to the random access preamble according to a correspondence between the preamble information and RAR resource information, wherein the RAR resource information comprises one or more of the following;
the RAR resource, an RAR resource index, an index of a time resource used for transmitting an RAR message, an index of a frequency resource used for transmitting the RAR message, a start time resource in the time resource used for transmitting the RAR message, and a start frequency resource used for transmitting the RAR message, and the correspondence between the preamble information and the RAR resource information is configured using signaling or preset by a system; andsending the RAR message corresponding to the random access preamble to the user equipment on the RAR resource corresponding to the random access preamble; wherein the correspondence between the preamble information and the RAR resource information comprises; the RAR resource index corresponding to the random access preamble index of the random access preamble mod a quantity of RAR resources configured using signaling or preset by the system, wherein mod denotes a modulo operation. - View Dependent Claims (2, 3, 4)
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5. A method for predetermining a resource in random access, wherein the method comprises:
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determining a random access preamble, and sending the first random access preamble to a base station; determining preamble information according to the first random access preamble, wherein the preamble information comprises one or more of the following;
the random access preamble, a random access preamble index, an index of a time resource used for transmitting the random access preamble, an index of a frequency resource used for transmitting the random access preamble, a start time resource in the time resource used for transmitting the random access preamble, and a start frequency resource used for transmitting the random access preamble;determining a random access response (RAR) resource corresponding to the first random access preamble according to a correspondence between the preamble information and RAR resource information, wherein the RAR resource information comprises one or more of the following;
the RAR resource, an RAR resource index, an index of a time resource used for transmitting an RAR message, an index of a frequency resource used for transmitting the RAR message, a start time resource in the time resource used for transmitting the RAR message, and a start frequency resource used for transmitting the RAR message, and the correspondence between the preamble information and the RAR resource information is configured using signaling or preset by a system; andreceiving, on the RAR resource corresponding to the first random access preamble, a media access control (MAC) packet data unit (PDU) sent by the base station, and determining whether the MAC PDU comprises the RAR message corresponding to the first random access preamble; wherein the correspondence between the preamble information and the RAR resource information comprises; the RAR resource index corresponding to the random access preamble index of the random access preamble mod a quantity of RAR resources configured using signaling or preset by the system, wherein mod denotes a modulo operation. - View Dependent Claims (6, 7, 8)
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9. A base station, wherein the base station comprises:
- a bus, and a processor, a memory, and an interface connected to the bus, wherein the memory is configured to store instructions;
the interface is configured to receive a random access preamble sent by a user equipment; the processor executes the instructions to; determine preamble information according to the received random access preamble, wherein the preamble information comprises one or more of the following;
the random access preamble, a random access preamble index, an index of a time resource used for transmitting the random access preamble, an index of a frequency resource used for transmitting the random access preamble, a start time resource in the time resource used for transmitting the random access preamble, and a start frequency resource used for transmitting the random access preamble;determine a random access response (RAR) resource corresponding to the random access preamble according to a correspondence between the preamble information and RAR resource information, wherein the RAR resource information comprises one or more of the following;
the RAR resource, an RAR resource index, an index of a time resource used for transmitting an RAR message, an index of a frequency resource used for transmitting the RAR message, a start time resource in the time resource used for transmitting the RAR message, and a start frequency resource used for transmitting the RAR message, and the correspondence between the preamble information and the RAR resource information is configured using signaling or preset by a system; andthe interface is further configured to send the RAR message corresponding to the random access preamble to the user equipment on the RAR resource corresponding to the random access preamble; wherein the correspondence between the preamble information and the RAR resource information comprises; the RAR resource index corresponding to the random access preamble index of the random access preamble mod a quantity of RAR resources configured using signaling or preset by the system, wherein mod denotes a modulo operation. - View Dependent Claims (10, 11, 12)
- a bus, and a processor, a memory, and an interface connected to the bus, wherein the memory is configured to store instructions;
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13. A user equipment, wherein the user equipment comprises:
- a bus, and a processor, a memory, and an interface connected to the bus, wherein the memory is configured to store instructions;
the processor executes the instruction to determine a random access preamble; the interface configured to send the first random access preamble to a base station; the processor executes the instructions to further; determine preamble information according to the first random access preamble, wherein the preamble information comprises one or more of the following;
the random access preamble, a random access preamble index, an index of a time resource used for transmitting the random access preamble, an index of a frequency resource used for transmitting the random access preamble, a start time resource in the time resource used for transmitting the random access preamble, and a start frequency resource used for transmitting the random access preamble; anddetermine a random access response (RAR) resource corresponding to the first random access preamble according to a correspondence between the preamble information and RAR resource information, wherein the RAR resource information comprises one or more of the following;
the RAR resource, an RAR resource index, an index of a time resource used for transmitting an RAR message, an index of a frequency resource used for transmitting the RAR message, a start time resource in the time resource used for transmitting the RAR message, and a start frequency resource used for transmitting the RAR message, and the correspondence between the preamble information and the RAR resource information is configured using signaling or preset by a system;the interface is further configured to receive, on the RAR resource corresponding to the first random access preamble, a media access control (MAC) packet data unit (PDU) sent by the base station; and the processor executes the instruction to further determine whether the MAC PDU comprises the RAR message corresponding to the first random access preamble; wherein the correspondence between the preamble information and the RAR resource information comprises; the RAR resource index corresponding to the random access preamble index of the random access preamble mod a quantity of RAR resources configured using signaling or preset by the system, wherein mod denotes a modulo operation. - View Dependent Claims (14, 15, 16)
- a bus, and a processor, a memory, and an interface connected to the bus, wherein the memory is configured to store instructions;
Specification