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US 12,707,493 B2Granted
Coverage enhancement for contention free random access
AssigneeQUALCOMM Incorproated
InventorsLinhai He, Mahmoud Taherzadeh Boroujeni, Hung Dinh Ly
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Abstract
Methods, systems, nodes, and devices for wireless communication are described. The method may include a first network node (e.g., a user equipment (UE)) receiving a first message that indicates a first preamble and transmitting a random access request message indicative of a request by the first network node for repetition based transmission of a second message. In response to the random access request, the first network node may receive a random access response message including an indication that the second message is to be transmitted with repetition and transmit the second message in accordance with repetition.
Claims23
A first network node for wireless communication, comprising:
- a memory;
- and
- at least one processor coupled to the memory, wherein the at least one processor is configured to:
- receive a first message that indicates a first preamble allocated to the first network node for a random access procedure;
- receive an indication of a first set of random access occasions and a second set of random access occasions for transmission of a random access request message, wherein the first set of random access occasions is associated with repetition based transmission of a second message, and wherein the second set of random access occasions is associated with transmission of the second message without repetition;
- transmit, as part of the random access procedure, the random access request message comprising the first preamble;
- receive, as part of the random access procedure and responsive to the random access request message, a random access response message comprising a resource grant for the second message, wherein the random access response message is decoded based on satisfaction of one or more conditions associated with repetition based transmission of the second message;
- and
- transmit, as part of the random access procedure, the second message with repetition in accordance with the resource grant.
6 more elements
A first network node for wireless communication, comprising:
- a memory;
- and
- at least one processor coupled to the memory, wherein the at least one processor is configured to:
- receive one or more reference signals;
- measure the one or more reference signals resulting in one or more measurements, wherein, to transmit the random access request message, the at least one processor is configured to transmit the random access request message based on the one or more measurements of the one or more reference signals;
- compare the one or more measurements to a plurality of thresholds resulting in a first determination or a second determination, wherein the at least one processor is configured to cause the first preamble to be included in the random access request message based on the first determination, and wherein the at least one processor is configured to cause a second preamble to be included in the random access request message based on the second determination;
- receive a first message that indicates a first preamble allocated to the first network node for a random access procedure;
- transmit, as part of the random access procedure, a random access request message comprising the first preamble, wherein transmission of the random access request message is indicative of a request by the first network node to perform the repetition based transmission of the second message;
- receive, as part of the random access procedure and responsive to the random access request message, a random access response message comprising a resource grant for a second message, wherein the random access response message is decoded based on satisfaction of one or more conditions associated with repetition based transmission of the second message;
- and
- transmit, as part of the random access procedure, the second message with repetition in accordance with the resource grant.
8 more elements
A first network node for wireless communication, comprising:
- a memory;
- and
- at least one processor coupled to the memory, wherein the at least one processor is configured to:
- receive one or more reference signals;
- measure the one or more reference signals resulting in one or more measurements, wherein, to transmit the random access request message, the at least one processor is configured to transmit the random access request message based on the one or more measurements of the one or more reference signals;
- compare the one or more measurements to a plurality of thresholds resulting in a first determination or a second determination, wherein the at least one processor is configured to cause the random access request message to be transmitted using a first random access occasion based on the first determination, and wherein the at least one processor is configured to cause the random access request message to be transmitted using a second random access occasion based on the second determination;
- receive a first message that indicates a first preamble allocated to the first network node for a random access procedure;
- transmit, as part of the random access procedure, a random access request message comprising the first preamble, wherein transmission of the random access request message is indicative of a request by the first network node to perform the repetition based transmission of the second message;
- receive, as part of the random access procedure and responsive to the random access request message, a random access response message comprising a resource grant for a second message, wherein the random access response message is decoded based on satisfaction of one or more conditions associated with repetition based transmission of the second message;
- and
- transmit, as part of the random access procedure, the second message with repetition in accordance with the resource grant.
8 more elements
A first network node for wireless communication, comprising:
- a memory;
- and
- at least one processor coupled to the memory, wherein the at least one processor is configured to:
- receive one or more reference signals;
- measure the one or more reference signals resulting in one or more measurements, wherein, to transmit the random access request message, the at least one processor is configured to transmit the random access request message based on the one or more measurements of the one or more reference signals;
- determine that the one or more measurements of the one or more reference signals are within a first range of values associated with contention-free random access transmissions with a coverage enhancement, wherein satisfaction of the one or more conditions comprises the one or more measurements of the one or more reference signals being within the first range of values associated with the contention-free random access transmissions with the coverage enhancement;
- receive a first message that indicates a first preamble allocated to the first network node for a random access procedure;
- transmit, as part of the random access procedure, a random access request message comprising the first preamble, wherein transmission of the random access request message is indicative of a request by the first network node to perform the repetition based transmission of the second message;
- receive, as part of the random access procedure and responsive to the random access request message, a random access response message comprising a resource grant for a second message, wherein the random access response message is decoded based on satisfaction of one or more conditions associated with repetition based transmission of the second message;
- and
- transmit, as part of the random access procedure, the second message with repetition in accordance with the resource grant.
8 more elements
A first network node for wireless communication, comprising:
- a memory;
- and
- at least one processor coupled to the memory, wherein the at least one processor is configured to:
- receive a first message that indicates a first preamble allocated to the first network node for a random access procedure;
- transmit, as part of the random access procedure, a random access request message comprising the first preamble;
- receive, as part of the random access procedure and responsive to the random access request message, a random access response message comprising a resource grant for a second message, wherein the random access response message is decoded based on satisfaction of one or more conditions associated with repetition based transmission of the second message;
- transmit, as part of the random access procedure, the second message with repetition in accordance with the resource grant;
- transmit a measurement report that is indicative of a quality of a link between the first network node and a second network node, wherein the first preamble is allocated based on the measurement report;
- and
- receive an indication for the first network node to transmit the second message with repetition based on the measurement report, wherein satisfaction of the one or more conditions comprises reception of the indication for the first network node to transmit the second message with repetition.
7 more elements
A first network node for wireless communication, comprising:
- a memory;
- and
- at least one processor coupled to the memory, wherein the at least one processor is configured to:
- transmit a first message that indicates a first preamble that is allocated to a second network node for a random access procedure;
- receive, as part of the random access procedure, a random access request message comprising the first preamble;
- transmit, as part on the random access procedure and responsive to the random access request message, a random access response message comprising a resource grant for a second message, wherein an interpretation of the random access response message is based on satisfaction of one or more conditions associated with repetition based transmission of the second message;
- and
- receive a measurement report that is indicative of a quality of a link between the first network node and the second network node, wherein the first preamble is allocated based on the measurement report;
- transmit an indication for the second network node to transmit the second message with repetition based on the measurement report, wherein satisfaction of the one or more conditions comprises transmission of the indication for the second network node to transmit the second message with repetition;
- and
- receive, as part of the random access procedure, the second message with repetition in accordance with the resource grant.
8 more elements
Dependencies are inferred from the claim text.