Methods and apparatus for cell selection
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsJinhua Liu, Xinyu Gu, Qingyu Miao, Stephen Grant
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Abstract
The present disclosure relates to a cell selection scheme. In one embodiment, there provides a method for performing a cell selection for a UE at a primary serving cell of the UE in a CoMP cluster including the primary serving cell and one or more candidate cells, the method comprising the steps of: receiving PRACH measurements for the UE from the candidate cells; and selecting from the candidate cells one or more cells for the UE as its secondary serving cells based on the received PRACH measurements.
Claims25
A method for performing a cell selection for a user equipment (UE), the method comprising:
- detecting, by a primary serving cell of the UE in a Coordinated Multi-Point (CoMP) cluster including the primary serving cell and one or more candidate cells, a Physical Random Access Channel (PRACH) preamble signal of the UE to obtain PRACH information of the UE;
- transmitting, by the primary serving cell, the PRACH information to the candidate cells for obtaining PRACH measurements;
- receiving, by the primary serving cell, the PRACH measurements for the UE from the candidate cells, wherein the PRACH measurements are obtained by the candidate cells based on the PRACH information;
- and
- selecting, by the primary serving cell, from the candidate cells one or more cells for the UE as the UE's secondary serving cells based on the received PRACH measurements.
A non-transitory computer-readable storage medium having computer-readable instructions to facilitate cell selection for a user equipment (UE), the instructions being executable by a computing device, the instructions comprising:
- detecting, by the computing device serving as a primary serving cell of the UE in a Coordinated Multi-Point (CoMP) cluster including the primary serving cell and one or more candidate cells, a Physical Random Access Channel (PRACH) preamble signal of the UE to obtain PRACH information of the UE;
- transmitting, by the computing device, the PRACH information to the candidate cells for obtaining PRACH measurements;
- receiving, by the computing device, the PRACH measurements for the UE from the candidate cells, wherein the PRACH measurements are obtained by the candidate cells based on the PRACH information;
- and
- selecting, by the computing device, from the candidate cells one or more cells for the UE as the UE's secondary serving cells based on the received PRACH measurements.
An apparatus for performing a cell selection for a user equipment (UE), the apparatus comprising:
- a processor and computer-readable storage medium coupled to the processor, the computer-readable storage medium including:
- a detecting unit configured to detect a Physical Random Access Channel (PRACH) preamble signal of the UE in a Coordinated Multi-Point (CoMP) cluster including the apparatus serving as a primary serving cell and on or more candidate cells to obtain PRACH information of the UE;
- a transmitting unit configured to transmit the PRACH information to the candidate cells for obtaining the PRACH measurements;
- a receiving unit configured to receive PRACH measurements for the UE from the candidate cells, wherein the PRACH measurements are to be obtained by the candidate cells based on the PRACH information;
- and
- a selecting unit configured to select from the candidate cells one or more cells for the UE as its secondary serving cells based on the received PRACH measurements.
An apparatus for use in a cell selection for a user equipment (UE), the apparatus comprising:
- a processor and computer-readable storage medium coupled to the processor, the computer-readable storage medium including:
- a receiving unit configured to receive a PRACH preamble signal from the UE and to receive PRACH information of the UE from a primary serving cell of the UE in a Coordinated Multi-Point (CoMP) cluster including the primary serving cell and one or more candidate cells, wherein the apparatus serves as one included candidate cell;
- a Physical Random Access Channel (PRACH) measurement obtaining unit configured to obtain a PRACH measurement for the UE based on the PRACH information;
- and
- a transmitting unit configured to transmit the PRACH measurement to the primary serving cell for use in the cell selection.
Dependencies are inferred from the claim text.