Method for ue and user equipment

A method used in an user equipment (UE), comprising:

• A. determining an initialization value of a scrambling sequence generator, wherein the initialization value is determined by at least one of the following:
• a first ID;
• a second ID;
• and
• a time slot index;
• B. generating a D2D scrambling sequence;
• C. performing a descrambling operation on a demodulated D2D signal by using the D2D scrambling sequence;
• wherein the first ID is one element in an integer set from 0 to 65535, the second ID is one element in an integer set from 504 to 3080, and the time slot index is one element in an integer set from 0 to 19;
• wherein the initialization value has a linear relationship with at least one of the following:
• the first ID;
• the second ID;
• and
• the time slot index.

An user equipment, comprising:

• a first module for determining an initialization value of a scrambling sequence generator;
• a second module for generating a D2D scrambling sequence;
• and
• a third module for performing a scrambling operation on a D2D signal by using the D2D scrambling sequence;
• wherein the first ID is one element in an integer set of 0 to 65535, the second ID is one element in an integer set of 504 to 3080, and the time slot index is one element in an integer set of 0 to 19;
• wherein the initialization value is determined by at least one of the following:
• a first ID;
• a second ID;
• and
• a time slot index;
• wherein the initialization value has a linear relationship with at least one of the following:
• the first ID;
• the second ID;
• and
• the time slot index.

An user equipment, comprising:

• a first module for determining an initialization value of a scrambling sequence generator;
• a second module for generating a D2D scrambling sequence;
• and
• a third module for performing a descrambling operation on a demodulated D2D signal by using the D2D scrambling sequence;
• wherein, the first ID is one element in an integer set from 0 to 65535, the second ID is one element in an integer set from 504 to 3080, and the time slot index is one element in an integer set from 0 to 19;
• the initialization value is determined by at least one of the following:
• a first ID;
• a second ID;
• and
• a time slot index;
• the initialization value has a linear relationship with at least one of the following:
• the first ID;
• the second ID;
• and
• the time slot index.