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 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 an RAR resource corresponding to the random access preamble according to a correspondence between the preamble information and random access response 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 by 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.
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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.
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Citations
20 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 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 an RAR resource corresponding to the random access preamble according to a correspondence between the preamble information and random access response 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 by 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. - View Dependent Claims (2, 3, 4, 5)
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6. 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 an RAR resource corresponding to the first random access preamble according to a correspondence between the preamble information and random access response 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 by 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. - View Dependent Claims (7, 8, 9, 10)
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11. 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 an instruction;
the interface is configured to receive a random access preamble sent by user equipment; the processor executes the instruction 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 an RAR resource corresponding to the random access preamble according to a correspondence between the preamble information and random access response 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 by 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. - View Dependent Claims (12, 13, 14, 15)
- a bus, and a processor, a memory, and an interface connected to the bus, wherein the memory is configured to store an instruction;
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16. 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 an instruction;
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 instruction 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 an RAR resource corresponding to the first random access preamble according to a correspondence between the preamble information and random access response 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 by 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. - View Dependent Claims (17, 18, 19, 20)
- a bus, and a processor, a memory, and an interface connected to the bus, wherein the memory is configured to store an instruction;
Specification