Method and apparatus to facilitate support for multi-radio coexistence
A method of wireless communication includes monitoring coexistence issues among supported radios in a User Equipment (UE). The method includes determining a coexistence policy for communication resource operation within a user equipment (UE) and configuring communication resources of the user equipment in accordance with the determined coexistence policy. The policy may give priority to an LTE modem, an ISM modem, or may implement a variable priority scheme. The policy may be communicated to each modem from a host over a software messaging communication line. Modems in the UE may communicate with each other through logical lines providing real time communication. The policy may determine the operation of each modem and the treatment of the logical lines by each modem.
1. A method for wireless communications, the method comprising:
receiving, by a device comprising a Long Term Evolution (LTE) modem and an industrial, scientific, and medical (ISM) modem, over a software messaging input of the device, a coexistence policy for operation of communication resources of a first radio access technology within a user equipment (UE), in which the coexistence policy:
describes how the first radio access technology will operate based on contemporaneous operating conditions experienced by a second radio access technology, the contemporaneous operating conditions communicated over logical lines between resources of the second radio access technology and resources of the first radio access technology, in which the first radio access technology is configured to operate in one manner in response to one coexistence policy and configured to operate in a different manner in response to a different coexistence policy, and
allows the LTE modem to transmit when the ISM modem is not receiving, and the coexistence policy allows the LTE modem to receive when the ISM modem is not transmitting or to receive while accounting for interference from the ISM modem; and
configuring, by the device, operation of communication resources of the user equipment based at least in part on at least one setting in the coexistence policy governing resource operation in response to signals received on the logical lines, in which the configuring comprises:
setting a first logical line when the ISM modem is transmitting,
assigning priority to the ISM modem on a second logical line when the ISM modem is receiving,
halting transmission by the LTE modem when the ISM modem has priority on the second logical line,
allowing transmission by the LTE modem when the ISM modem does not have priority on the second logical line, and
allowing receiving by the LTE modem when the first logical line is not set.
2. The method of claim 1 further comprising
receiving the coexistence policy over a coexistence interface.
3. The method of claim 1 further comprising reconfiguring operation of communication resources based on the coexistence policy in response to communication conditions experienced by the user equipment.
4. The method of claim 1 further comprising reconfiguring operation of communication resources based on the coexistence policy in response to the signals on logical lines between the first radio access technology resources and the second radio access technology resources.
5. The method of claim 1 , further comprising reconfiguring operation of communication resources of the user equipment in response to the signals on logical lines between the first radio access technology resources and the second radio access technology resources based on a second coexistence policy, the second coexistence policy controlling operation of communication resources of the first radio access technology.
6. The method of claim 5 , in which the coexistence policy allows the industrial, scientific, and medical (ISM) modem to transmit when a Long Term Evolution (LTE) modem is not receiving.
7. The method of claim 6 in which the reconfiguring comprises:
setting a first logical line when the LTE modem is to receive a signal;
allowing transmission by the ISM modem when the first logical line is not set; and
allowing receiving by the ISM modem when the LTE modem is not transmitting or when a power level of the LTE modem is below a threshold value.
8. The method of claim 5 , in which the coexistence policy allows the industrial, scientific, and medical (ISM) modem to communicate high priority events or when a Long Term Evolution (LTE) modem is not in operation.
9. The method of claim 8 in which the reconfiguring comprises:
allowing transmission by the LTE modem when the ISM modem does not have priority on a first logical line;
allowing receiving by the LTE modem while accounting for potential interference from the ISM modem, when a second logical line is set;
setting a third logical line when the LTE modem is to receive an LTE signal; and
determining a priority of an ISM signal when the ISM modem desires to transmit the ISM signal, and permitting assertion of the first logical line and setting the second logical line when the priority is above a threshold value.
10. An apparatus for wireless communication, comprising:
a memory; and
at least one processor coupled to the memory executing instructions stored thereon, the at least one processor being configured:
to receive over a software messaging input, a coexistence policy for operation of communication resources of a first radio access technology within a user equipment (UE), in which the coexistence policy:
describes how the first radio access technology will operate based on contemporaneous operating conditions experienced by a second radio access technology, the contemporaneous operating conditions communicated over logical lines between resources of the second radio access technology and resources of the first radio access technology, in which the first radio access technology is configured to operate in one manner in response to one coexistence policy and configured to operate in a different manner in response to a different coexistence policy, and
allows a Long Term Evolution (LTE) modem to transmit when an industrial, scientific, and medical (ISM) modem is not receiving, and the coexistence policy allows the LTE modem to receive when the ISM modem is not transmitting or to receive while accounting for interference from the ISM modem; and
to configure operation of communication resources of the user equipment based at least in part on at least one setting in the coexistence policy governing resource operation in response to signals received on the logical lines, in which the configuring comprises:
setting a first logical line when the ISM modem is transmitting,
assigning priority to the ISM modem on a second logical line when the ISM modem is receiving,
halting transmission by the LTE modem when the ISM modem has priority on the second logical line,
allowing transmission by the LTE modem when the ISM modem does not have priority on the second logical line, and
allowing receiving by the LTE modem when the first logical line is not set.
11. The apparatus of claim 10 in which the processor is further configured to receive the coexistence policy over a coexistence interface.
12. The apparatus of claim 10 in which the processor is further configured to reconfigure operation of communication resources based on the coexistence policy in response to communication conditions experienced by the user equipment.
13. The apparatus of claim 10 in which the processor is further configured to reconfigure operation of communication resources based on the coexistence policy in response to the signals on logical lines between the first radio access technology resources and the second radio access technology resources.
14. The apparatus of claim 10 in which the processor is further configured to reconfigure operation of communication resources of the user equipment in response to the signals on logical lines between the first radio access technology resources and the second radio access technology resources based on a second coexistence policy, the second coexistence policy controlling operation of communication resources of the first radio access technology.
15. The apparatus of claim 10 , in which the coexistence policy allows the industrial, scientific, and medical (ISM) modem to transmit when a Long Term Evolution (LTE) modem is not receiving, and in which the processor is further configured:
to set a first logical line when the LTE modem is to receive a signal;
to allow transmission by the ISM modem when the first logical line is not set; and
to allow receiving by the ISM modem when the LTE modem is not transmitting or when a power level of the LTE modem is below a threshold value.
16. The apparatus of claim 10 , in which the coexistence policy allows the industrial, scientific, and medical (ISM) modem to communicate high priority events or when a Long Term Evolution (LTE) modem is not in operation, and in which the processor is further configured:
to allow transmission by the LTE modem when the ISM modem does not have priority on a first logical line;
to allow receiving by the LTE modem while accounting for potential interference from the ISM modem, when a second logical line is set;
to set a third logical line when the LTE modem is to receive an LTE signal; and
to determine a priority of an ISM signal when the ISM modem desires to transmit the ISM signal, and permitting assertion of the first logical line and setting the second logical line when the priority is above a threshold value.
17. A computer program product for wireless communication in a wireless network, comprising:
a non-transitory computer-readable medium having non-transitory program code recorded thereon, the program code comprising:
program code to receive over a software messaging input, a coexistence policy for operation of communication resources of a first radio access technology within a user equipment (UE), in which the coexistence policy:
describes how the first radio access technology will operate based on contemporaneous operating conditions experienced by a second radio access technology, the contemporaneous operating conditions communicated over logical lines between resources of the second radio access technology and resources of the first radio access technology, in which the first radio access technology is configured to operate in one manner in response to one coexistence policy and configured to operate in a different manner in response to a different coexistence policy, and
allows a Long Term Evolution (LTE) modem to transmit when an industrial, scientific, and medical (ISM) modem is not receiving, and the coexistence policy allows the LTE modem to receive when the ISM modem is not transmitting or to receive while accounting for interference from the ISM modem; and
program code to configure operation of communication resources of the user equipment based at least in part on at least one setting in the coexistence policy governing resource operation in response to signals received on the logical lines, in which the configuring comprises:
setting a first logical line when the ISM modem is transmitting,
assigning priority to the ISM modem on a second logical line when the ISM modem is receiving,
halting transmission by the LTE modem when the ISM modem has priority on the second logical line,
allowing transmission by the LTE modem when the ISM modem does not have priority on the second logical line, and
allowing receiving by the LTE modem when the first logical line is not set.