DEVICE COMMUNICATION USING A REDUCED CHANNEL BANDWIDTH
Systems and/or methods for supporting communications at a reduced bandwidth with a full bandwidth network such as a long-term evolution (LTE) network may be disclosed. For example, inband assignments such as downlink assignments and/or uplink grants may be provided and/or received and transmissions may be monitored and/or decoded based on the inband assignment. Additionally, information (e.g. a definition or configuration) associated with an ePDCCH may be provided and/or received and ePDCCH resources may be monitored and/or decoded based on such information. An indication for support of a reduced bandwidth by the full bandwidth network may also be provided and/or received and control channels in the reduced or narrow bandwidth may be monitored and/or decoded based on the indication. A PRACH preamble and/or a multi-type suhframe definition may also be provided and/or used for support of such a reduced bandwidth.
1 - 34 . (canceled)
35 . A method implemented by a wireless transmit receive unit (WTRU) for performing random access, the method comprising:
the WTRU sending a preamble using a selected set of physical random access channel (PRACH) resources selected from one of a first set of PRACH resources and a second set of PRACH resources; and
the WTRU monitoring one of a physical downlink control channel (PDCCH) or a PDCCH associated with a machine type communication (MTC) device (M-PDCCH) based on the selected set of PRACH resources used for sending the preamble, wherein the WTRU monitors the PDCCH if the preamble is sent using the first set of PRACH resources and the WTRU monitors the M-PDCCH if the preamble is sent using the second set of PRACH resources.
36 . The method of claim 35 , further comprising the WTRU receiving a random access response, RAR, via the M-PDCCH based on the preamble being sent on the second set of PRACH resources.
37 . The method of claim 36 , wherein resources associated with the M-PDCCH for monitoring comprise a set of resource blocks (RBs) within a reduced bandwidth.
38 . The method of claim 35 , wherein the WTRU corresponds to a narrow bandwidth long-term evolution (LTE) user equipment (UE) device.
39 . The method of claim 37 , wherein a subset of the resources associated with the M-PDCCH is configured for use by the WTRU.
40 . The method of claim 35 , wherein the preamble is sent to a full bandwidth network, wherein the full bandwidth network comprises an LTE network operating at a bandwidth of 20 MHz, and wherein the WTRU comprises a low-cost machine type communication device operating at a bandwidth of 1.4 MHz.
41 . The method of claim 37 , wherein the resources associated with the M-PDCCH are monitored in a subframe and at a particular location.
42 . The method of claim 35 , wherein the second set of PRACH resources correspond to PRACH resources for a reduced bandwidth WTRU.
43 . A wireless transmit receive unit (WTRU) comprising a processor configured at least to:
send a preamble using a selected set of physical random access channel (PRACH) resources selected from one of a first set of PRACH resources and a second set of PRACH resources; and
monitor one of a physical downlink control channel (PDCCH) or a PDCCH associated with a machine type communication (MTC) device (M-PDCCH) based on the selected set of PRACH resources used for sending the preamble, wherein the WTRU monitors the PDCCH if the preamble is sent using the first set of PRACH resources and the WTRU monitors the M-PDCCH if the preamble is sent using the second set of PRACH resources.
44 . The WTRU of claim 43 , wherein the processor is configured to receive a random access response (RAR) via the M-PDCCH based on the preamble being sent on the second set of PRACH resources.
45 . The WTRU of claim 44 , wherein resources associated with the modified PDCCH for monitoring comprise a set of resource blocks (RBs) within a reduced bandwidth.
46 . The WTRU of claim 43 , wherein the WTRU corresponds to a narrow bandwidth long-term evolution (LTE) user equipment (UE) device.
47 . The WTRU of claim 45 , wherein a subset of the resources associated with the M-PDCCH is configured for use by the WTRU.
48 . The WTRU of claim 43 , wherein the preamble is sent to a full bandwidth network, wherein the full bandwidth network comprises an LTE network operating at a bandwidth of 20 MHz, and wherein the WTRU comprises a low-cost machine type communication device operating at a bandwidth of 1.4 MHz.
49 . The WTRU of claim 45 , wherein the resources associated with the M-PDCCH are monitored in a subframe and at a particular location.
50 . The WTRU of claim 43 , wherein the second set of PRACH resources correspond to PRACH resources for a reduced bandwidth WTRU.