Patent ID: 9537628
Date: 2017-01-03
CPC Classifications: H04B,H04L,H04W

Claim:
1. A method in a wireless terminal for receiving user data in a wireless communication system enabling coordinated multipoint transmission of the user data from a first cell site serving the wireless terminal and a second cell site neighboring the first cell site, said coordinated multipoint transmission comprising one of a coordinated scheduling of the transmission of the user data from the first and second cell sites and a joint transmission of the user data from the first and second cell sites, wherein the first cell site maps control signals and user data to a plurality of time-frequency resources according to a first mapping pattern and the second cell site maps control signals and user data to the plurality of time-frequency resources according to a second mapping pattern, the method comprising: extracting user data, according to the first mapping pattern, from time-frequency resources of a first transmission for the wireless terminal transmitted from the first cell site; detecting a control element transmitted by the first cell site, the control element indicating that user data associated with the control element is mapped to the time-frequency resources according to the second mapping pattern; and responsive to said detecting, extracting user data according to the second mapping pattern from time-frequency resources of a second transmission for the wireless terminal transmitted from the second cell site; wherein the control element comprises at least one of reference-signal frequency shift information of the second cell site and a number of Orthogonal Frequency Division Multiplexing (OFDM) symbols explicitly signaled for a control region of the second cell site.