US 9,426,829 B2 · Random access method and receiver

Abstract

The embodiments of the present document provide a random access method and a receiver, wherein, the random access method includes: after starting up, a receiver performing cell search and downlink synchronization to obtain a time reference; the receiver obtaining a distance between itself and a base station; the receiver selecting a random access format according to parameters and a load condition of the system where it is located; the receiver obtaining a cell radius supported by the selected random access format, and calculating a line-of-sight transmission time delay if the cell radius is less than the distance; and based on the time reference, the receiver transmitting a random access subframe the line-of-sight transmission time delay in advance.

Claims17

Dependent claims

A random access method, comprising:

after starting up, a receiver performing cell search and downlink synchronization to obtain a time reference;
the receiver obtaining a distance between the receiver and a base station;
the receiver selecting a random access format according to parameters and a load condition of a system where the receiver is located;
the receiver obtaining a cell radius supported by the selected random access format, and calculating a line-of-sight transmission time delay if the cell radius is less than the distance;
and
based on the time reference, the receiver transmitting a random access subframe the line-of-sight transmission time delay in advance.

3 more elements

A receiver, comprising:

a processor, and a storage device for storing computer executable instructions that when executed by the processor cause the processor to perform the steps in following modules:
an obtaining module, configured to perform cell search and downlink synchronization to obtain a time reference after the receiver starts up;
and obtain a distance between the receiver and a base station;
a selection module, configured to select a random access format according to parameters and a load condition of a system where the receiver is located;
a calculation module, configured to obtain a cell radius supported by the selected random access format, and calculate a line-of-sight transmission time delay if the cell radius is less than the distance;
and
a sending module, configured to, based on the time reference received by the obtaining module, transmit a random access subframe the line-of-sight transmission time delay in advance.

4 more elements

Dependencies are inferred from the claim text.

Random access method and receiver

Life of this patent

Random access method and receiver

Life of this patent

Abstract

Claims17