Method and apparatus for adapting random access allocation of resources to user equipment

Abstract

The present disclosure relates to user equipment UE or machine type communication MTC (104, 202, 302, 304, 700) apparatuses and base stations (102, 204, 306, 600) and methods thereof for adapting random access resources to cells served by the base station A method of allocation of user equipment. In case each RA preamble group maps or corresponds to an uplink allocation size, the method in the base station (102, 204, 306, 600) comprises receiving an RA preamble from a UE in a cell served by the base station, The preamble indicates the requested resource allocation size for uplink transmission of UE data. Monitor the radio resource usage in the cell (S-348, 402) and based on the monitored usage of the radio resources, adapt the mapping between the configured uplink allocation size for the cell and the RA preamble group (S-356, 412) . Therefore, it provides an effective way for UE or MTC device to meet its UL allocation requirements for transmitting user data in combination with step 3 of the random access procedure.

Description

technical field [0001] The present disclosure relates generally to the field of random access, and more specifically, to the field of random access allocation of resources to user equipment. The present disclosure relates in particular to methods and apparatus for adapting random access resource allocation to user equipments. Background technique [0002] The current general outlook for the future development of communications in cellular networks is to include a large number of small autonomous devices that typically transmit and receive small amounts of data only occasionally, eg once a week to once a minute. These devices are generally considered not to be associated with humans, but instead are associated with different kinds of sensors or actuators that communicate with application servers in order to enable the configuration and Data reception from these devices. Accordingly, this type of communication is often referred to as machine-to-machine (M2M) communication, a...

AI Technical Summary

Problems solved by technology

This rigidity leads to a poor match between the UL data to be sent and the size of the UL resources allocated for the RA uplink message Msg3, which in turn leads to poor resource utilization

[0022] Furthermore, a consequence of this rigidity is that poor or at least non-optimal correspondence between RA preamble groups and uplink resource allocation sizes may become common, which adversely affects the collision probability

[0023] In an example case, all UEs will seek to use preambles from the same preamble group, which increases the collision probability since UEs use a smaller number of preambles for contention

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