Measurement-based random access configuration
摘要
說明書
Still referring to
Regarding time, for shorter random access delay, the device may advantageously select a random access resource that follows shortly in time, in various embodiments. Regarding code/sequence, in some embodiments, the device conveys information to the random access signal receiver by the selection of the code/sequence used for the random access signal. For example, the set of possible codes/sequences may be subdivided into subsets, where the device subset selection is based on the information to be conveyed. The random access receiver is the entity intended to receive and detect the random access signal. In some embodiments, one or more TPs are used. In LTE, for example, the preamble sequences for contention-based random access are subdivided into two subsets. The subset to which the UE-selected sequence belongs indicates to the eNodeB the size of a subsequent UE message. In some other embodiments, the device may choose randomly or pseudo-randomly among the set of possible random access codes/sequences.
