Method and a user equipment for transmitting a signal, and a method and a base station for receiving a signal

摘要

A method for transmitting or receiving an uplink signal is disclosed. If a user equipment is connected to a base station in accordance with a legacy system support mode, it performs permutation for an uplink signal on a frequency axis in accordance with a first rule. If the user equipment is connected to the base station in accordance with a legacy system non-support mode, it performs permutation for the uplink signal on the frequency axis in accordance with a second rule. Cell ID corresponding to a secondary advanced preamble (SA-preamble) received from the base station is used for permutation based on the first rule and/or the second rule.

主权项

1. A method for transmitting a signal from a user equipment in a wireless communication system that supports a legacy system and an enhanced system improved from the legacy system by adding one or more functions to the legacy system, the method comprising:
if the user equipment is an enhanced user equipment based on the enhanced system, performing permutation for an uplink (UL) signal on a frequency axis in accordance with a first rule when the enhanced user equipment is connected to a base station with a legacy system support mode, and performing permutation for the UL signal on the frequency axis in accordance with a second rule when the enhanced user equipment is connected to the base station with a legacy system non-support mode; and transmitting the UL signal to the base station, wherein the enhanced user equipment performs permutation for the UL signal by using the first rule or the second rule based on a cell identity (ID) corresponding to a secondary advanced (SA) preamble received from the base station, wherein the first rule is defined in accordance with Tiles(s,n), where Tiles(s,n)=Nsubchannels×n+(Pt[(s+n) mod Nsubchannels]+UL_PermBase) mod Nsubchannels, Tiles(s,n) representing a physical tile index for the n-th tile located at the s-th subchannel, Nsubchannels representing the number of subchannels, and Pt representing a tile permutation pattern, wherein the second rule is defined in accordance with Tiles(s,n,t), where Tiles(s,n,t)=LDRU,FPi×n+{PermSeq[(n+107*s+1213*t) mod LDRU,FPi]+UL_PermBase} mod LDRU,FPi, Tiles(s,n,t) represents a physical tile index of the n-th tile located at the s-th distributed logical resource unit (DLRU) of the t-th subframe, LDRU,FPi represents the number of distributed resource units (DRUs) included in frequency partition (FP) i, and PermSeq( ) represents a permutation sequence of a length LDRU,FPi, and wherein the enhanced user equipment performs permutation for the UL signal by setting UL_PermBase to the cell ID.