Resource allocation for co-existing networks

摘要

The present invention relates to methods and arrangements for improving the capabilities of an evolved Universal Terrestrial Radio Access Network, in particular for cases when more than one radio access network applying a time-division duplex transmission mode need to co-exist on a same carrier. The invention addresses further problems concerning an efficient allocation of uplink resources and resource allocation in a handover situation. The present invention assigns an attribute in form of a distinguishing value to the time slots used for the uplink and downlink transmission on said carrier such as to avoid scheduling of transmissions via a first radio access network in downlink or uplink time slots assigned to the second radio access network and to avoid scheduling of transmissions via the second radio access network in uplink time slots assigned for transmissions in the first radio access network.

主权项

1. A method in a single network node of a communication system applying data transmission in time slots on a same frequency band for uplink and downlink transmissions to and from a user equipment, said single network node supporting access to at least a first and a second co-existing radio access network, the method comprising:
assigning, by the network node, to each time slot an attribute distinguishing transmission mode and direction of transmission in said time slot, wherein, for one or more time slots, said attribute comprises at least one value which marks, by the network node, the one or more time slots as discontinuous transmission and reception or inactive, to prohibit the usage of the one or more time slots to user equipments accessing said network node via the first radio access network and not to prohibit the usage of the one or more time slots to user equipments accessing said network node via the second radio access network, wherein the first radio access network is a Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN) and the second radio access network is a Evolved UTRAN (E-UTRAN), and wherein both the first and second co-existing radio access networks utilize a same carrier frequency.