US 11,706,808 B2
Random access method, terminal, and network device
Yumin Wu, Dongguan (CN); and Wei Bao, Dongguan (CN)
Assigned to VIVO MOBILE COMMUNICATION CO., LTD., Dongguan (CN)
Filed by VIVO MOBILE COMMUNICATION CO., LTD., Dongguan (CN)
Filed on Nov. 19, 2020, as Appl. No. 16/953,164.
Application 16/953,164 is a continuation of application No. PCT/CN2019/088880, filed on May 28, 2019.
Claims priority of application No. 201810645997.4 (CN), filed on Jun. 21, 2018.
Prior Publication US 2021/0076426 A1, Mar. 11, 2021
Int. Cl. H04W 74/08 (2009.01); H04W 72/0453 (2023.01)
CPC H04W 74/0833 (2013.01) [H04W 72/0453 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A random access method applied to a terminal, the method comprising:
receiving first resource configuration information sent by a network device, wherein the first resource configuration information is used to indicate M first frequency resources and N second frequency resources, and M and N are positive integers greater than or equal to 1;
sending a random access request on a target first frequency resource to the network device; and
receiving a random access response sent by the network device on a target second frequency resource, wherein the target first frequency resource is a free frequency resource in the M first frequency resources, and the target second frequency resource is a free frequency resource in the N second frequency resources,
wherein before sending the random access request on the target first frequency resource to the network device, the method further comprises:
monitoring some or all first frequency resources in the M first frequency resources; and
when the terminal detects that Y first frequency resources in the some or all first frequency resources are free, using at least one of the Y first frequency resources as the target first frequency resource, wherein Y is less than or equal to a quantity of the some or all first frequency resources, and Y is a positive integer greater than or equal to 1,
wherein monitoring some or all first frequency resources in the M first frequency resources comprises: monitoring the some or all first frequency resources in the M first frequency resources according to a first predetermined rule; and
using at least one of the Y first frequency resources as the target first frequency resource comprises: selecting at least one of the Y first frequency resources as the target first frequency resource according to a second predetermined rule, wherein
the first predetermined rule comprises at least one of the following: first frequency resources satisfying a first condition are monitored, and a quantity of monitored first frequency resources is less than or equal to a first threshold; and
the second predetermined rule comprises at least one of the following: first frequency resources satisfying the first condition are selected, or a quantity of selected first frequency resources is less than or equal to a third threshold; wherein the first condition is that a frequency measurement value corresponding to the first frequency resource is greater than or equal to a second threshold, the first threshold is less than or equal to M, and the third threshold is less than or equal to Y.