Method of performing random access in mobile communication system and apparatus for the same
AssigneeLG Electronics Inc.
InventorsYoung Dae Lee, Sung Hoon Jung, Seung June Yi, Sung Duck Chun, Sung Jun Park
Life of this patent
Estimating the term…
Abstract
A method of performing a random access in a mobile communication system and an apparatus for the same are disclosed. The method of performing a random access includes transmitting a random access preamble to a network node and receiving a random access response from the network node, wherein the random access response is received through a first subframe if the random access preamble is a dedicated preamble, and the random access response is received through a second subframe which is different from the first subframe if the random access preamble is a non-dedicated preamble.
Claims14
A method of performing a random access at a relay node in a mobile communication system, the method comprising:
- a) transmitting a random access preamble in a specific subframe to a base station;
- b) if the random access preamble is a dedicated preamble, monitoring a Relay-Physical Downlink Control Channel (R-PDCCH) in a data region of a Multicast Broadcast over a Single Frequency Network (MBSFN) subframe, and receiving a random access response included in a Relay-Physical Downlink Shared Channel (R-PDSCH) in the data region of the MBSFN subframe based on the R-PDCCH from the base station;
- and
- c) if the random access preamble is a non-dedicated preamble, monitoring a Physical Downlink Control Channel (PDCCH) in a control region of a non-Multicast Broadcast over a Single Frequency Network (non-MBSFN) subframe, and receiving the random access response included in a Physical Downlink Shared Channel (PDSCH) in the data region of the non-MBSFN subframe based on the PDCCH from the base station,
- wherein the MBSFN subframe and the non-MBSFN subframe are located within a predetermined window after the specific subframe, and
- wherein the starting subframe of the predetermined window for the MBSFN subframe is different from the starting subframe of the predetermined window for the non-MBSFN subframe.
A method of performing random access at a base station in a mobile communication system, the method comprising:
- a) receiving a random access preamble in a specific subframe from a relay node;
- b) if the random access preamble is a dedicated preamble, transmitting a Relay-Physical Downlink Control Channel (R-PDCCH) through a data region of a Multicast Broadcast over a Single Frequency Network (MBSFN) subframe to the relay node, and transmitting a Relay-Physical Downlink Shared Channel (R-PDSCH) including a random access response through the data region of the MBSFN subframe to the relay node, wherein the R-PDCCH indicates the R-PDSCH;
- and
- c) if the random access preamble is a non-dedicated preamble, transmitting a Physical Downlink Control Channel (PDCCH) through a control region of a non-Multicast Broadcast over a Single Frequency Network (non-MBSFN) subframe to the relay node, and transmitting a Physical Downlink Shared Channel (PDSCH) including the random access response in the data region of the non-MBSFN subframe to the relay node, wherein the PDCCH indicates the PDSCH,
- wherein the MBSFN subframe and the non-MBSFN subframe are located within a predetermined window after the specific subframe, and
- wherein the starting subframe of the predetermined window for the MBSFN subframe is different from the starting subframe of the predetermined window for the non-MBSFN subframe.
A device configured to perform a random access at a relay node in a mobile communication system, the device comprising:
- a transmitter configured to transmit a random access preamble in a specific subframe to a base station;
- and
- a receiver configured to:
- a) monitor a Relay-Physical Downlink Control Channel (R-PDCCH) in a data region of a Single Frequency Network (MBSFN) subframe and receive a random access response included in a Relay-Physical Downlink Shared Channel (R-PDSCH) in the data region of the MBSFN subframe based on the R-PDCCH from the base station if the random access preamble is a dedicated preamble, and
- b) monitor a Physical Downlink Control Channel (PDCCH) in a control region of a non-Multicast Broadcast over a Single Frequency Network (non-MBSFN) subframe and receive the random access response included in a Physical Downlink Shared Channel (PDCCH) in the data region of the non-MBSFN subframe based on the PDCCH from the base station,
- wherein the MBSFN subframe and the non-MBSFN subframe are located within a predetermined window after the specific subframe, and
- wherein the starting subframe of the predetermined window for the MBSFN subframe is different from the starting subframe of the predetermined window for the non-MBSFN subframe.
Dependencies are inferred from the claim text.