Localized and distributed transmission

摘要

The available transmission resources on a downlink-shared channel are divided into resource blocks, each resource block comprising a predetermined number of sub-carriers during a predetermined time period. The resource blocks are subdivided into localized resource blocks and distributed resource blocks. A user requiring sufficient resources can be allocated a plurality of said localized resource blocks. A user who would require only a small number of said localized resource blocks can instead be allocated summits of a plurality of said distributed resource blocks.

主权项

1. A method for achieving frequency diversity for scheduled transmissions of resource blocks on a downlink-shared channel between a network node and a plurality of terminals in a telecommunication system, comprising:
determining physical resources available for transmission on the downlink-shared channel, the physical resources comprising a plurality of physical resource blocks each comprising L consecutive sub-carriers and n consecutive symbols per sub-carrier; assigning each of the physical resource blocks for either localized transmission or distributed transmission, wherein at least two of the physical resource blocks are assigned for localized transmission and at least two of the physical resource blocks are assigned for distributed transmission; determining whether a first data transmission capacity required for downlink transmission to a first terminal among the plurality of terminals is greater than the predetermined threshold, and in response to determining that the first data transmission capacity is greater than the predetermined threshold, mapping each of a plurality of localized virtual resource blocks associated with the first terminal to a plurality of the physical resource blocks that have been assigned for localized transmission, wherein each of the localized virtual resource blocks comprises M=L×n symbols, and the localized virtual resource blocks are mapped one-to-one to the plurality of physical resource blocks that have been assigned for localized transmission; determining whether a second data transmission capacity required for downlink transmission to a second terminal among the plurality of terminals is greater than the predetermined threshold, and in response to determining that the second data transmission capacity is not greater than the predetermined threshold, mapping each of at least one distributed virtual resource block associated with the second terminal to a plurality of the physical resource blocks that have been assigned for distributed transmission, wherein each of the at least one distributed virtual resource blocks comprises M symbols; wherein the mapping of the at least one distributed virtual resource block is performed by splitting each of the at least one distributed virtual resource blocks into a number of parts, and the parts are mapped respectively to all of the physical resource blocks that have been assigned for distributed transmission; and transmitting information from the network node to the plurality of terminals according to the mapping of localized virtual resource blocks associated with the first terminal and the mapping of the at least one distributed virtual resource block associated with the second terminal.