| 摘要 |
In a mobile communications system in which a first group of mobile units communicate with a base station using a first carrier and a second group of mobile units communicate with the base station using a second carrier, the base station provides common information, i.e. information common to both carriers, on the first carrier only. A grant or resource allocation message is provided for both carriers, but the message in the second carrier points to the location of the common information within the first carrier. This reduces the duplication in the system information transmitted. The invention has particular application in the case of machine type communications (MTC) in a 3GPP Long Term Evolution (LTE) architecture. In one embodiment a virtual carrier 501 of limited bandwidth is inserted into the downlink host carrier 320 for the MTC devices and the allocation message or grant 503 in the virtual carrier points to allocated resources 344 in the host carrier. |
