Methods and Apparatus for Decoding DL PHY Channels in a Narrow Band System
Apparatus and methods are provided for decoding DL PHY channels in a narrow band wireless system. In one novel aspect, the UE performs a cell search and determines a first location of a resource block carrying system signals, obtains a second location of a second resource block based on the first resource block, wherein the second resource block includes a format indicator, determines a DL transmission format based on the format indicator, and receives and decodes a first DL physical channel based on the DL transmission format. In one embodiment, the UE operates in either a standalone mode, an in-band mode, or a guard-band mode. The DL transmission format comprises an offset index from a middle/central frequency of the first resource block in the in-band mode or the guard-band mode. In another embodiment, the UE further decodes a second DL physical channel carrying the format indicator.
1 . A method comprising:
retrieving an identification (ID) from a mobile device by a user equipment (UE) in a wireless network;
sending a subscription request to a e-SIM platform, wherein the subscription request includes information of the retrieved ID of the mobile device;
receiving subscription response from the e-SIM platform; and
enabling the mobile device based on the received subscription response.
2 . The method of claim 1 , wherein the first set of system signals is for cell search.
3 . The method of claim 2 , wherein the first resource block comprises PSS and SSS, and the second resource block comprises MIB.
4 . The method of claim 1 , wherein the first resource block comprises PSS, and the second resource block comprises SSS.
5 . The method of claim 2 , wherein the first resource block comprises PSS and SSS, and the second resource block comprises a signal from a pre-defined set wherein each signal of the predefined set is associated with one DL transmission format.
6 . The method of claim 1 , wherein obtaining the format indicator on the second resource block by sequence detection within a pre-defined sequence set, where each sequence is associated with one DL transmission format.
7 . The method of claim 1 , wherein obtaining the format indicator on the second resource block by energy detecting on the second resource block.
8 . The method of claim 1 , wherein obtaining the format indicator on the second resource block by decoding a second DL channel transmitting carrying system information on the second resource block.
9 . The method of claim 1 , wherein the DL transmission format includes one or more elements comprising: an operation mode, a DL carrier spacing, a PRB index, a frame structure, a CP length, a transmission waveform, a pilot format, and an operating bandwidth.
10 . The method of claim 9 , wherein the operation mode is one predefined format comprising a standalone mode, an in-band mode, and a guard-band mode.
11 . The method of claim 9 , wherein for the in-band mode, the first resource block carrying the first set of system signal(s) for the first system resides inside a frequency band of a second system.
12 . The method of claim 9 , wherein for the guard-band mode, the first resource block carrying the first set of system signal(s) for the first system resides in a guard frequency band a second system.
13 . The method of claim 9 , wherein the operation mode is the in-band mode or the guard-band mode, and wherein the DL transmission format further comprising an offset index from a center frequency of a second system.
14 . The method of claim 1 , wherein after determining a downlink (DL) transmission format, adjusting the configuration of receiver, and receiving and decoding a first DL physical channel.
15 . An user equipment (UE), comprising:
a radio frequency (RF) transceiver that transmits and receives radio signals in the wireless communication network;
a first resource block circuit that obtains a first resource block by performing a cell search, wherein the first resource block carries a first set of system signals;
a second resource block circuit that obtains a second location of a second resource block based on the first resource block, wherein the second resource block includes a format indicator;
a downlink (DL) transmission format circuit that determines a DL transmission format based on the format indicator; and
a physical channel circuit that receives and decodes a DL physical channel based on the DL transmission format.
16 . The UE of claim 15 , wherein the first resource block comprises PSS and SSS, and the second resource block comprises MIB.
17 . The UE of claim 15 , wherein the first resource block comprises PSS, and the second resource block comprises SSS.
18 . The UE of claim 15 , wherein the first resource block comprises PSS and SSS, and the second resource block comprises a predefined signal from a pre-defined set, wherein each signal is associated with a DL transmission format.
19 . The UE of claim 15 , wherein the DL transmission format includes one or more elements comprising: an operation mode, a DL carrier spacing, a PRB index, a frame structure, a CP length, a transmission waveform, a pilot format, and an operating bandwidth.
20 . The UE of claim 15 , wherein the operation mode is one predefined format comprising a standalone mode, an in-band mode, and a guard-band mode.
21 . The UE of claim 20 , wherein for the in-band mode, the first resource block carrying the first set of system signal(s) for the first system resides inside a frequency band of a second system.
22 . The UE of claim 20 , wherein for the guard-band mode, the first resource block carrying the first set of system signal(s) for the first system resides in a guard frequency band a second system.
23 . The UE of claim 20 , wherein the operation mode is the in-band mode or the guard-band mode, and wherein the DL transmission format further comprising an offset index from a center frequency of a second system.