Multiple bandwidth operation

1 . A method for wireless communication at a wireless device, comprising:

receiving a broadcast of a first message comprising an indication of a first bandwidth value;

receiving, based on the first bandwidth value, a second message comprising a radio resource control (RRC) message, the second message comprising an indication of a second bandwidth value, wherein the second bandwidth value replaces the first bandwidth value;

receiving a second RRC message comprising an indication of a frequency offset associated with the second bandwidth value;

determining a frequency position that indicates a plurality of physical resource blocks for the second bandwidth value using the frequency offset;

receiving downlink transmissions comprising downlink control information (DCI) based on the second bandwidth value following receipt of the second message; and

interpreting the DCI based on the second bandwidth value.

2 . The method of claim 1 , wherein the second bandwidth value is associated with a device type of the wireless device.

3 . The method of claim 1 , further comprising:

receiving, based on the first bandwidth value or the second bandwidth value, an indication of a third bandwidth value, wherein the second bandwidth value and the third bandwidth value are associated with at least one of: different transmission types, different channels, different symbol periods, different slots, different subframes, different frames, or a combination thereof; and

receiving downlink transmissions based on the third bandwidth value following receipt of the second message.

4 . The method of claim 3 , further comprising:

receiving the indication of the third bandwidth value in the second message or in a third message.

5 . The method of claim 1 , further comprising:

receiving the first message in a physical broadcast channel (PBCH).

6 . The method of claim 1 , wherein the second bandwidth value is associated with receipt of a cell-specific reference signal (CRS) for at least one of time tracking, frequency tracking, or demodulation of a control channel or a data channel.

7 . The method of claim 1 , wherein the second bandwidth value is associated with receipt of a data channel, the method further comprising:

deriving a third bandwidth value based on at least one of: the second bandwidth value, a data channel grant, or a combination thereof, the third bandwidth value associated with receipt of a reference signal (RS) for demodulation of the data channel.

8 . The method of claim 1 , wherein the second bandwidth value is associated with receipt of a control channel, the method further comprising:

determining, based on the second bandwidth value, at least one of: a third bandwidth value associated with receipt of a reference signal (RS) for demodulation of the control channel, a set of physical downlink control channel (PDCCH) resources to be monitored, or a combination thereof.

9 . The method of claim 1 , wherein the second bandwidth value is associated with receipt of a control channel, the method further comprising:

identifying a candidate message for blind decoding based on the second bandwidth value.

10 . The method of claim 1 , further comprising:

receiving downlink transmissions based on at least one of the first bandwidth value or a third bandwidth value following receipt of the second message,

wherein the received downlink transmissions comprise a channel, and a reference signal for the channel, received based on: different bandwidth values, different frequency positions, or a combination thereof.

11 . The method of claim 1 , further comprising:

implicitly deriving the indication of the second bandwidth value from the second message.

12 . An apparatus for wireless communication at a wireless device, comprising:

means for receiving a broadcast of a first message comprising an indication of a first bandwidth value;

means for receiving, based on the first bandwidth value, a second message comprising a radio resource control (RRC) message, the second message comprising an indication of a second bandwidth value, wherein the second bandwidth value replaces the first bandwidth value;

means for receiving a second RRC message comprising an indication of a frequency offset associated with the second bandwidth value;

means for determining a frequency position that indicates a plurality of physical resource blocks for the second bandwidth value using the frequency offset;

means for receiving downlink transmissions comprising downlink control information (DCI) based on the second bandwidth value following receipt of the second message; and

means for interpreting the DCI based on the second bandwidth value.

13 . The apparatus of claim 12 , wherein the second bandwidth value is associated with a device type of the wireless device.

14 . The apparatus of claim 12 , further comprising:

means for receiving, based on the first bandwidth value or the second bandwidth value, an indication of a third bandwidth value, wherein the second bandwidth value and the third bandwidth value are associated with at least one of: different transmission types, different channels, different symbol periods, different slots, different subframes, different frames, or a combination thereof, and

means for receiving downlink transmissions based on the third bandwidth value following receipt of the second message.

15 . The apparatus of claim 14 , further comprising:

means for receiving the indication of the third bandwidth value in the second message or in a third message.

16 . The apparatus of claim 12 , further comprising:

means for receiving the first message in a physical broadcast channel (PBCH).

17 . The apparatus of claim 12 , wherein the second bandwidth value is associated with receipt of at least one reference signal (RS), control channel, data channel, or combination thereof.

18 . The apparatus of claim 12 , wherein the second bandwidth value is associated with receipt of a data channel, the apparatus further comprising:

means for deriving a third bandwidth value based on at least one of: the second bandwidth value, a data channel grant, or a combination thereof, the third bandwidth value associated with receipt of a reference signal (RS) for demodulation of the data channel.

19 . The apparatus of claim 12 , wherein the second bandwidth value is associated with receipt of a data channel, the apparatus further comprising:

means for receiving downlink control information (DCI) following receipt of the second message; and

means for interpreting the DCI based on the second bandwidth value.

20 . The apparatus of claim 12 , wherein the second bandwidth value is associated with receipt of a control channel, the apparatus further comprising:

means for determining, based on the second bandwidth value, at least one of: a third bandwidth value associated with receipt of a reference signal (RS) for demodulation of the control channel, a set of physical downlink control channel (PDCCH) resources to be monitored, or a combination thereof.

21 . The apparatus of claim 12 , wherein the second bandwidth value is associated with receipt of a control channel, the apparatus further comprising:

means for identifying a candidate message for blind decoding based on the second bandwidth value.

22 . The apparatus of claim 12 , further comprising:

means for receiving downlink transmissions based on at least one of the first bandwidth value or a third bandwidth value following receipt of the second message,

wherein the received downlink transmissions comprise a channel, and a reference signal for the channel, received based on: different bandwidth values, different frequency positions, or a combination thereof.

23 . The apparatus of claim 12 , further comprising:

means for implicitly deriving the indication of the second bandwidth value from the second message.

24 . An apparatus for wireless communication at a wireless device, comprising:

a processor,

memory in electronic communication with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

receive a broadcast of a first message comprising an indication of a first bandwidth value;

receive, based on the first bandwidth value, a second message comprising a radio resource control (RRC) message, the second message comprising an indication of a second bandwidth value, wherein the second bandwidth value replaces the first bandwidth value;

receive a second RRC message comprising an indication of a frequency offset associated with the second bandwidth value;

determine a frequency position that indicates a plurality of physical resource blocks for the second bandwidth value using the frequency offset;

receive downlink transmissions comprising downlink control information (DCI) based on the second bandwidth value following receipt of the second message; and

interpret the DCI based on the second bandwidth value.

25 . The apparatus of claim 24 , wherein the instructions are further executable by the processor to:

receive, based on the first bandwidth value or the second bandwidth value, an indication of a third bandwidth value, wherein the second bandwidth value and the third bandwidth value are associated with at least one of: different transmission types, different channels, different symbol periods, different slots, different subframes, different frames, or a combination thereof; and

receive downlink transmissions based on the third bandwidth value following receipt of the second message.

26 . The apparatus of claim 24 , wherein the second bandwidth value is associated with receipt of at least one reference signal (RS), control channel, data channel, or combination thereof.

27 . The apparatus of claim 24 , wherein the instructions are further executable by the processor to:

receive downlink transmissions based on at least one of the first bandwidth value or a third bandwidth value following receipt of the second message,

wherein the received downlink transmissions comprise a channel, and a reference signal for the channel, received based on: different bandwidth values, different frequency positions, or a combination thereof.

28 . A non-transitory computer-readable medium storing computer-executable code for wireless communication at a wireless device, the code executable to:

receive a broadcast of a first message comprising an indication of a first bandwidth value;

receive, based on the first bandwidth value, a second message comprising a radio resource control (RRC) message, the second message comprising an indication of a second bandwidth value, wherein the second bandwidth value replaces the first bandwidth value;

receive a second RRC message comprising an indication of a frequency offset associated with the second bandwidth value;

determine a frequency position that indicates a plurality of physical resource blocks for the second bandwidth value using the frequency offset;

receive downlink transmissions comprising downlink control information (DCI) based on the second bandwidth value following receipt of the second message; and

interpret the DCI based on the second bandwidth value.

29 . A method for wireless communication at a wireless device, comprising:

identifying a narrowband bandwidth value;

receiving, based on the narrowband bandwidth value, a message comprising an indication of a wideband bandwidth value, wherein the wideband bandwidth value is greater than the narrowband bandwidth value;

increasing the narrowband bandwidth value from a first narrowband value to a second narrowband value that is a fraction of the indicated wideband bandwidth value, the second narrowband value being different than the indicated wideband bandwidth value, wherein increasing the narrowband bandwidth value to the second narrowband value is based at least in part on an overlap of the narrowband bandwidth value with the indicated wideband bandwidth value; and

receiving downlink transmissions based on the second narrowband value following receipt of the message.

30 . The method of claim 29 , wherein increasing the narrowband bandwidth value further comprises:

increasing the narrowband bandwidth value for at least one of: receipt of a reference signal (RS), time tracking, frequency tracking, signal measurement, or a combination thereof.

31 . An apparatus for wireless communication at a wireless device, comprising:

means for identifying a narrowband bandwidth value;

means for receiving, based on the narrowband bandwidth value, a message comprising an indication of a wideband bandwidth value, wherein the wideband bandwidth value is greater than the narrowband bandwidth value;

means for increasing the narrowband bandwidth value from a first narrowband value to a second narrowband value that is a fraction of the indicated wideband bandwidth value, the second narrowband value being different than the indicated wideband bandwidth value, wherein increasing the narrowband bandwidth value to the second narrowband value is based at least in part on an overlap of the narrowband bandwidth value with the indicated wideband bandwidth value; and

means for receiving downlink transmissions based on the second narrowband value following receipt of the message.

32 . The apparatus of claim 31 , wherein the means for increasing the narrowband bandwidth value comprises:

means for increasing the narrowband bandwidth value for at least one of: receipt of a reference signal (RS), time tracking, frequency tracking, signal measurement, or a combination thereof.

33 . An apparatus for wireless communication at a wireless device, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

identify a narrowband bandwidth value;

receive, based on the narrowband bandwidth value, a message comprising an indication of a wideband bandwidth value, wherein the wideband bandwidth value is greater than the narrowband bandwidth value;

increase the narrowband bandwidth value from a first narrowband value to a second narrowband value that is a fraction of the indicated wideband bandwidth value, the second narrowband value being different than the indicated wideband bandwidth value, wherein increasing the narrowband bandwidth value to the second narrowband value is based at least in part on an overlap of the narrowband bandwidth value with the indicated wideband bandwidth value; and

receive downlink transmissions based on the second narrowband value following receipt of the message.

34 . The apparatus of claim 33 , wherein the instructions executable by the processor to increase the narrowband bandwidth value comprise instructions executable by the processor to:

increase the narrowband bandwidth value for at least one of: receipt of a reference signal (RS), time tracking, frequency tracking, signal measurement, or a combination thereof.

35 . A non-transitory computer-readable medium storing computer-executable code for wireless communication at a wireless device, the code executable to:

identify a narrowband bandwidth value;

receive, based on the narrowband bandwidth value, a message comprising an indication of a wideband bandwidth value, wherein the wideband bandwidth value is greater than the narrowband bandwidth value;

increase the narrowband bandwidth value from a first narrowband value to a second narrowband value that is a fraction of the indicated wideband bandwidth value, the second narrowband value being different than the indicated wideband bandwidth value, wherein increasing the narrowband bandwidth value to the second narrowband value is based at least in part on an overlap of the narrowband bandwidth value with the indicated wideband bandwidth value; and

receive downlink transmissions based on the second narrowband value following receipt of the message.

36 . A method for wireless communication at a wireless device, comprising:

receiving a broadcast of a first message comprising an indication of a first narrowband bandwidth value;

receiving, based on the first narrowband bandwidth value, a second message comprising a radio resource control (RRC) message, the second message comprising an indication of a second narrowband bandwidth value, wherein the second narrowband bandwidth value replaces the first narrowband bandwidth value;

receiving a second RRC message comprising an indication of a frequency offset associated with the second narrowband bandwidth value, wherein the second narrowband bandwidth value and the first narrowband bandwidth value correspond to different center frequencies;

determining, based on the frequency offset, a frequency position that indicates a plurality of physical resource blocks for the second narrowband bandwidth value;

receiving downlink transmissions comprising downlink control information (DCI) based on the second narrowband bandwidth value following receipt of the second message; and

interpreting the DCI based on the second narrowband bandwidth value.

37 . An apparatus for wireless communication at a wireless device, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

receive a broadcast of a first message comprising an indication of a first narrowband bandwidth value;

receive, based on the first narrowband bandwidth value, a second message comprising a radio resource control (RRC) message, the second message comprising an indication of a second narrowband bandwidth value, wherein the second narrowband bandwidth value replaces the first narrowband bandwidth value;

receive a second RRC message comprising an indication of a frequency offset associated with the second narrowband bandwidth value, wherein the second narrowband bandwidth value and the first narrowband bandwidth value correspond to different center frequencies;

determine, based on the frequency offset, a frequency position that indicates a plurality of physical resource blocks for the second narrowband bandwidth value;

receive downlink transmissions comprising downlink control information (DCI) based on the second narrowband bandwidth value following receipt of the second message; and

interpret the DCI based on the second narrowband bandwidth value.