Abstract: A wireless communication network having received-priority access requests on an access channel issues an implicit reject response on a grant channel, such as a flag or other value embedded in an explicit access grant or explicit access reject response. The implicit reject response applies to some or all outstanding low-priority access requests. At the expiration of a terminal's grant channel monitoring window, if it has detected an applicable implicit reject response but not an explicit response, the terminal will refrain from transmitting another access request for a predetermined or configurable duration. The implicit reject response may comprise a flag, or a value that implicitly rejects only a fraction of the outstanding low-priority access requests. The implicit reject response may comprise a duration that the terminal must wait prior to transmitting another access request, and may direct the terminal to directly monitor the grant channel without transmitting a subsequent access request.

Abstract: To access a network, an MTC device sends a channel request message to the network over a random access channel. The channel request message includes a device type indication and a resource type indication. The device type indication may for example, indicate to the network that the requesting device is an MTC device or non-MTC device. Upon receipt of the channel request, the receiving network node can determine on the basis of the device type indication and resource type indication whether to grant or deny the access attempt, and to determine what resources to grant. The channel request message may further include a call duration indication in the channel request message if CS resources are requested for a voice call or a priority indication if CS resources are requested for a data transmission.

Abstract: Pre-existing methods of accessing a radio system via a random access channel as described in 3GPP TS 44.018 “Radio Resource Control (RRC) protocol” is modified to include a first additional parameter (i), which defines the spreading of the probability density function for each successive access attempt. In accordance with one embodiment the accessing user/device is configured to use a random wait time for the j-th retry to access the RACH as a function of the additional parameter (i) and the number j, where j is a positive integer.