Measurement-based random access configuration
摘要
說明書
It is often useful to be able to adapt the amount of random access resources. If there are too few random access resources in relation to the amount of random access attempts, the ratio of failed attempts might be too high. If there are too many random access resources in relation to the amount of random access attempts, then resources may be wasted, since other uplink transmissions might be avoided on the random access resources, resulting in reduced system performance.
In various systems including state-of-the-art systems such as LTE, the amount of random access resources can be adapted. The LTE UEs can learn which, and the amount of, random access resources that are currently in use, i.e. the set of allowed random access resources, by reading system information (SIB2), which can be received on the PDSCH.
The system and methods described in this disclosure allow adaptation of the random access resources without requiring the devices to obtain the current configuration of random access resources from system information. This is illustrated in
