阅读说明：本技术 控制无线设备中的共存无线电系统 (Controlling a co-existing radio system in a wireless device ) 是由 H·D·奥沙尔 D·马尔多纳多 R·纳拉亚纳斯瓦米 C·王 W·勒蒂希 于 2018-06-15 设计创作，主要内容包括：所公开的各方面涉及用于无线设备中的共存射频(RF)系统的方法和装置。对无线设备的控制包括：检测何时向第一无线电系统发出接通信号,并且随后控制第二无线电系统修改该第二无线电系统中的接收机电路系统的操作以保护该系统内的组件,或修改发射电路系统以停止传输以保护一个无线电系统内潜在地受到来自无线设备中的另一无线电系统的传输影响的组件。还公开了基于读取第一和第二无线电系统之间的消息来监视无线电系统的传输状态,以及基于此来发出通知消息以使得一个无线电系统可以挂起为了获得发射准予而对发射信道的监视,以减少由于对信道的这种监视引起的功耗。(The disclosed aspects relate to methods and apparatus for a co-existing Radio Frequency (RF) system in a wireless device control of the wireless device includes detecting when a turn-on signal is issued to a th radio system and then controlling a second radio system to modify operation of receiver circuitry in the second radio system to protect components within the system or modify transmit circuitry to stop transmitting to protect components within radio systems potentially affected by transmissions from another radio system of the wireless device.)

1, a method for controlling a wireless device comprising a coexisting Radio Frequency (RF) and a second radio system, the method comprising:

detecting in control logic circuitry when to issue a make signal to the th radio system to transmit a signal with transmit circuitry in the th radio system, and

modifying, with the control logic circuitry, operation of the second radio system, including at least of modifying operation of receiver circuitry in the second radio system or modifying operation of transmit circuitry in the second radio system.

2. The method of claim 1, wherein modifying operation of receiver circuitry in the second radio system further comprises:

disabling at least Low Noise Amplifiers (LNAs) in the second radio system by selectively bypassing the at least LNAs to protect the at least LNAs from transmissions from at least of the radio system or the second radio system.

3. The method of claim 2, wherein selectively bypassing the at least LNAs comprises coupling inputs of the at least LNAs to ground.

4. The method of claim 2, wherein modifying operation of receiver circuitry in the second radio system further comprises:

selectively reducing the gain of at least Low Noise Amplifiers (LNAs) in the second radio system.

5. The method of claim 4, wherein selectively reducing the gain of the at least LNAs comprises selectively switching between a plurality of gains.

6. The method of claim 5, wherein selectively switching between the plurality of gains comprises selecting an attenuation network from a plurality of attenuation networks having respective gain attenuations and coupling the attenuation network to the at least LNAs.

7. The method of claim 1, wherein modifying operation of transmit circuitry or the receiver circuitry in the second radio system comprises:

triggering modification of operation of transmit circuitry or receiver circuitry in the second wireless electrical system with the control logic circuitry, wherein the control logic circuitry is configured to:

receiving the emitted at least switch-on signals for switching on the transmission circuit of the radio system, and

sending a control signal to at least of transmit circuitry or receiver circuitry in the th radio system to trigger modification of operation of transmit circuitry or receiver circuitry in the second radio system in response to the received at least turn-on signals.

8. The method of claim 1, wherein the th or the second radio system's transmit circuitry comprises a Power Amplifier (PA).

9. The method of claim 1, wherein the th and second radio systems share a common frequency spectrum.

10. The method of claim 1, wherein the th and second radio systems are operable in respective frequency bands that are close in frequency such that transmissions of radio systems affect at least of receiver circuitry and transmit circuitry in another radio system.

11. The method of claim 1, wherein step comprises:

either the th or th radio system includes a plurality of front end transmit/receive modules, wherein each of the plurality of front end transmit/receive modules is configured to be operable independently of the other ones of the plurality of front end transmit/receive modules and

controlling operation of or more of the remaining front end transmit/receive modules of the plurality of front end transmit/receive modules to provide protection from or reduce interference with the transmitting front end transmit/receive module when at least of the plurality of front end transmit/receive modules are operable to transmit.

12. The method of claim 11, wherein controlling operation of the one or more of the remaining ones of the plurality of front end transmit/receive modules comprises disabling or modifying operation of of transmit circuitry or receiver circuitry in the one or more of the remaining front end transmit/receive modules.

13. The method of claim 1, wherein step comprises:

receiver circuitry in of the or a second radio system that includes an LNA in a power saving gain bypass mode is controlled by modifying or disabling operation of the LNA in the power saving gain bypass mode.

14. The method of claim 13, wherein controlling receiver circuitry in either the th or of second radio systems further comprises:

at least of the th and second radio systems include a plurality of Low Noise Amplifiers (LNAs), and

selectively modifying operation of or more of the plurality of LNAs.

15. The method of claim 14, wherein selectively modifying the operation of the one or more of the plurality of LNAs comprises a combination of selectively reducing a gain of one or more of the plurality of LNAs and selectively changing a gain of one or more of the plurality of LNAs.

16. The method of claim 14, wherein selectively modifying operation of the one or more of the plurality of LNAs is determined based on one or more of operating parameters of the or second radio system, and technology of the or second radio system.

17. The method of claim 1, wherein the control logic circuitry is configured to signal to disable an LNA in receiver circuitry of the second radio system when the radio system issues a command to turn on a Power Amplifier (PA) in transmit circuitry of the radio system.

18. The method of claim 1, wherein the control logic circuitry is configured to signal to disable an LNA in receiver circuitry of the radio system when the second radio system issues a command to turn on a Power Amplifier (PA) in transmit circuitry of the second radio system.

19. The method of claim 1, wherein the control logic circuitry is configured to signal to disable a Power Amplifier (PA) in transmit circuitry of the second radio system when the radio system issues a command to turn on the PA in transmit circuitry of the radio system.

20. The method of claim 1, wherein the control logic circuitry is configured to signal to disable a Power Amplifier (PA) in transmit circuitry of the radio system when the second radio system issues a command to turn on the PA in transmit circuitry of the second radio system.

21. The method of claim 1 wherein the control logic circuitry is configured to disable transmit circuitry in the th and second radio systems when both the th radio system and the second radio system issue signals indicating that a power amplifier of the transmit circuitry is turned off.

22. The method of claim 1 wherein the control logic circuitry is configured to turn off receiver circuitry in both the th and second radio systems when at least transmit circuitry of the th radio system is turned on.

23. The method of claim 1, wherein the radio system is capable of operating under a wireless domain network (WWAN) according to being LTE-U technology, LTE, Licensed Assisted Access (LAA) technology, enhanced LAA (eLAA) technology, E-UTRA band 47, or 5G New Radio (NR) technology.

24. The method of claim 1, wherein the second radio system is capable of operating in accordance with WiFi technology under a Wireless Local Area Network (WLAN).

25. The method of claim 1, wherein at least of the th and second radio systems are respectively communicatively coupled to or more antennas in the wireless device through an antenna diversity switch.

26. The method of claim 1, wherein step comprises:

controlling of transmit circuitry or receiver circuitry in at least of the th and second radio systems with a transmit/receive (T/R) switching function to selectively disable a path from at least an antenna to transmit circuitry or receiver circuitry.

27. The method of claim 1, wherein a component of the th radio system is capable of being used by the second radio system for at least one of transmitting or receiving RF signals , and

controlling either the th or of the second radio system includes controlling components used in the th radio system by the second radio system or controlling components used in the second radio system by the th radio system.

28, a wireless device operable with a coexisting Radio Frequency (RF) and a second radio system , the device comprising:

control logic circuitry configured to:

receiving at least turn-on signals emitted by a transceiver in the apparatus to turn on at least transmit circuitry of the radio system, and

controlling at least of receiver circuitry or transmit circuitry in the second radio system when the at least turn-on signals are issued to turn on at least transmit circuitry of the radio system.

29. The wireless device of claim 28, wherein the control logic circuitry comprises one or more of logic , a Programmable Logic Device (PLD), or a field programmable array (PFGA) of .

30. The wireless device of claim 28, wherein controlling the at least of receiver circuitry or transmit circuitry comprises modifying operation of at least of receiver circuitry or transmit circuitry in the second radio system to achieve at least of:

(a) protecting receiver circuitry of the second radio system, or

(b) Reducing interference from at least transmit circuitry of the th radio system.

31. The wireless device of claim 30, wherein the control logic circuitry is further configured to disable at least Low Noise Amplifiers (LNAs) in the second radio system by selectively bypassing the at least LNAs, thereby triggering modification of operation of receiver circuitry in the second radio system to protect the at least LNAs from transmissions from either the radio system or at least in the second radio system.

32. The wireless device of claim 31, wherein selectively bypassing the at least LNAs comprises coupling inputs of the at least LNAs to ground.

33. The wireless device of claim 30, wherein modifying operation of receiver circuitry in the second radio system further comprises:

selectively reducing the gain of at least Low Noise Amplifiers (LNAs) in the second radio system.

34. The wireless device of claim 33, wherein selectively reducing the gain of the at least LNAs comprises selectively switching between a plurality of gains.

35. The wireless device of claim 34, wherein selectively switching between the plurality of gains comprises selecting an attenuation network from a plurality of attenuation networks having respective gain attenuations and coupling the attenuation network to the at least LNAs.

36. The wireless device of claim 28, wherein the control logic circuitry is further configured to:

sending a control signal to at least of transmit circuitry or receiver circuitry in the th radio system to trigger modification of operation of transmit circuitry or receiver circuitry in the second radio system in response to the received at least turn-on signals.

37. The wireless device of claim 28, wherein the th or the second radio system's transmit circuitry comprises a Power Amplifier (PA).

38. The wireless device of claim 28, wherein the th and second radio systems share a common frequency spectrum.

39. The wireless device of claim 28, wherein the th and second radio systems are operable in respective frequency bands that are close in frequency such that transmissions of radio systems affect at least of receiver circuitry and transmit circuitry in another radio system.

40. The wireless device of claim 28, wherein step comprises:

or of the second radio system comprises a plurality of front end transmit/receive modules, wherein each of the plurality of front end transmit/receive modules is configured to be operable independently of other front end transmit/receive modules of the plurality of front end transmit/receive modules,

wherein the control logic circuitry is further configured to control operation of of remaining ones of the plurality of front end transmit/receive modules to provide protection from or reduce interference with the transmitting front end transmit/receive module when at least of the plurality of front end transmit/receive modules are operable to transmit.

41. The wireless device of claim 40, wherein controlling operation of the one or more of the remaining front-end transmit/receive modules of the plurality of front-end transmit/receive modules comprises disabling or modifying operation of of transmit circuitry or receiver circuitry in the one or more of the remaining front-end transmit/receive modules.

42. The wireless device of claim 40, wherein the control logic circuitry is further configured to:

receiver circuitry in of the or a second radio system that includes an LNA in a power saving gain bypass mode is controlled by modifying or disabling operation of the LNA in the power saving gain bypass mode.

43. The wireless device of claim 42, wherein controlling receiver circuitry in the or of second radio systems further comprises:

at least of the th and second radio systems include a plurality of Low Noise Amplifiers (LNAs), and

selectively modifying operation of or more of the plurality of LNAs.

44. The wireless device of claim 43, wherein selectively modifying the one or more of the plurality of LNAs comprises a combination of selectively reducing a gain of one or more of the plurality of LNAs and selectively changing a gain of one or more of the plurality of LNAs.

45. The wireless device of claim 43, wherein selectively modifying operation of the one or more of the plurality of LNAs is determined based on one or more of operating parameters of the or second radio system and technology of the or second radio system.

46. The wireless device of claim 28 wherein the control logic circuitry is further configured to signal to disable an LNA in receiver circuitry of the second radio system when the radio system issues a command to turn on a Power Amplifier (PA) in transmit circuitry of the radio system.

47. The wireless device of claim 28, wherein the control logic circuitry is further configured to signal to disable an LNA in receiver circuitry of the radio system when the second radio system issues a command to turn on a Power Amplifier (PA) in transmit circuitry of the second radio system.

48. The wireless device of claim 28 wherein the control logic circuitry is further configured to signal to disable a Power Amplifier (PA) in transmit circuitry of the second radio system when the radio system issues a command to turn on the PA in transmit circuitry of the radio system.

49. The wireless device of claim 28, wherein the control logic circuitry is further configured to signal to disable a Power Amplifier (PA) in transmit circuitry of the radio system when the second radio system issues a command to turn on the PA in transmit circuitry of the second radio system.

50. The wireless device of claim 28 wherein the control logic circuitry is further configured to disable transmit circuitry in the and second radio systems when both the radio system and the second radio system receive a signal indicating that a power amplifier of transmit circuitry is turned off.

51. The wireless device of claim 28 wherein the control logic circuitry is further configured to turn off receiver circuitry in both the and second radio systems when at least transmit circuitry of the radio system is turned on.

52. The wireless device of claim 28, wherein the radio system is capable of operating under a wireless domain network (WWAN) in accordance with being LTE-U technology, LTE, Licensed Assisted Access (LAA) technology, enhanced LAA (eLAA) technology, E-UTRA band 47, or 5G New Radio (NR) technology.

53. The wireless device of claim 28, wherein the second radio system is capable of operating under a Wireless Local Area Network (WLAN) in accordance with WiFi technology.

54. The wireless device of claim 28, wherein at least of the th and second radio systems are respectively communicatively coupled to or more antennas in the wireless device through an antenna diversity switch.

55. The wireless device of claim 28, wherein the control logic circuitry is distributed between at least two subsystems in the wireless device.

56. The wireless device of claim 28, wherein the control logic circuitry is integrated within a single subsystem within the wireless device.

57, a wireless device operable with a coexisting Radio Frequency (RF) and a second radio system , the device comprising:

means for receiving at least turn-on signals emitted by a transceiver in the apparatus to turn on at least transmit circuitry of the radio system, and

means for controlling at least of receiver circuitry or transmit circuitry in the second radio system when the at least turn-on signals are issued to turn on at least transmit circuitry of the radio system.

58. a non-transitory computer-readable medium storing computer-executable code, comprising code for causing a computer to:

trigger control logic circuitry configured to control at least of receiver circuitry or transmit circuitry in an th radio system within a wireless device having multiple co-existing RF radio systems, wherein the triggering comprises issuing at least turn-on signals to the control logic circuitry to turn on at least transmit circuitry of a second radio system.

59, a method for controlling a wireless device comprising a coexisting third radio system and a second radio system, the method comprising:

controlling the th and second radio systems to avoid damage from each other during transmission between the th and second radio systems on at least channels of a shared spectrum, wherein controlling the th or second radio system comprises:

determining whether at least of the or second radio system is transmitting on at least channels by reading control messages or information messages sent between the th and second radio systems within the wireless device, and

sending a notification message to at least of the or the second radio systems that are monitoring the at least channels to request transmissions on the at least channels, the notification message configured to indicate that another radio system is currently transmitting on the at least channels, based on determining that of the or second radio systems is transmitting or is about to transmit.

60. The method of claim 59, wherein step comprises:

suspending monitoring of the at least channels for requesting transmissions on the at least channels in at least of the or second radio system based on the notification message.

61. The method of claim 60, wherein step comprises:

resuming monitoring of the at least channels after a predetermined period of time.

62. The method of claim 60, wherein step comprises:

resuming monitoring of the at least channels after receiving an additional notification message in either the th or of the second radio systems configured to indicate that the additional radio system is no longer transmitting on the at least channels.

63. The method of claim 59, wherein step comprises:

receiving the notification message in the radio system, the notification message allowing the radio system to know that the second radio system is to transmit on the at least channels, and

initiating handshake synchronization between the th radio system and the second radio system to avoid collisions between the th and second radio systems.

64. The method of claim 59, further comprising modifying operation of receive circuitry in the radio system based on receiving the notification message.

65. The method of claim 59, wherein the radio system is capable of operating under a wireless domain network (WWAN) in accordance with being LTE-U technology, LTE, Licensed Assisted Access (LAA) technology, enhanced LAA (eLAA) technology, E-UTRA band 47, or 5G New Radio (NR) technology.

66. The method of claim 59, wherein the second radio system is capable of operating under a Wireless Local Area Network (WLAN) in accordance with WiFi technology.

67, a wireless device operable with a coexisting Radio Frequency (RF) and a second radio system , the device comprising:

processing circuitry configured to:

determining whether at least of the or second radio system is transmitting on at least channels by reading control messages or information messages sent between the th and second radio systems within the wireless device, and

sending a notification message to at least of the or the second radio systems that are monitoring the at least channels to request transmissions on the at least channels, the notification message configured to indicate that another radio system is currently transmitting on the at least channels, based on determining that of the or second radio systems is transmitting or is about to transmit.

68. The wireless device of claim 67, further comprising:

at least and second modem circuitry disposed in the th and second radio systems, respectively, the modem circuitry configured to:

suspending monitoring of the at least channels for requesting transmissions on the at least channels in at least of the or second radio system based on the notification message.

69. The wireless device of claim 68,

the modem circuitry is further configured to resume monitoring of the at least channels after a predetermined period of time.

70, an apparatus for controlling a wireless device comprising a coexisting third radio system and a second radio system, the apparatus comprising:

means for determining whether at least of the or second radio system is transmitting on at least channels by reading control messages or information messages sent between the th and second radio systems within the wireless device, and

means for sending a notification message to at least of the or the second radio systems that are monitoring the at least channels to request transmissions on the at least channels based on determining that of the or second radio systems are transmitting or are about to transmit, the notification message configured to indicate that another radio system is currently transmitting on the at least channels.

71. The apparatus of claim 70, wherein step comprises:

means for suspending monitoring of the at least channels to request transmissions on the at least channels in at least of the or second radio system based on the notification message.

72. The apparatus of claim 71, wherein step comprises:

means for resuming monitoring of the at least channels after a predetermined period of time.

73. The apparatus of claim 71, wherein step comprises:

means for resuming monitoring of the at least channels after receiving an additional notification message in either the th or second radio system configured to indicate that the additional radio system is no longer transmitting on the at least channels.

74, a non-transitory computer-readable medium storing computer-executable code, comprising code for causing a computer to:

controlling th and second co-existing radio systems in a wireless device to avoid damage from each other during transmission between the th and second shared radio systems on at least channels of a shared spectrum, wherein controlling the th or second radio system comprises:

determining whether at least of the or second radio system is transmitting on at least channels by reading control messages or information messages sent between the th and second radio systems within the wireless device, and

sending a notification message to at least of the or the second radio systems that are monitoring the at least channels to request transmissions on the at least channels, the notification message configured to indicate that another radio system is currently transmitting on the at least channels, based on determining that of the or second radio systems is transmitting or is about to transmit.

75. The non-transitory computer-readable medium of claim 74, further comprising code for causing a computer to:

suspending monitoring of the at least channels for requesting transmissions on the at least channels in at least of the or second radio system based on the notification message.

Technical Field

The subject matter disclosed herein relates to control of wireless devices, and more particularly to methods and apparatus for controlling and improving Radio Frequency (RF) system concurrency or coexistence of two or more different radio systems in a wireless device.

Background

examples of coexistence technologies, third generation partnership project (3GPP), which is part of Long Term Evolution (LTE), have employed licensed assisted access or Licensed Anchor Assisted (LAA) technologies that utilize carrier aggregation in the downlink to combine LTE (e.g., LAA or LTE-U) in unlicensed spectrum (e.g., the 5GHz band) along with LTE in licensed bands as a persistent anchor channel.

In a more recent development, wireless devices may have the capability to support Wireless Local Area Networks (WLANs) such as WiFi and wireless domain networks (WWANs) also concurrently including LAAs or LTE-U concurrently active in the same RF Band such as unlicensed 5GHz Band when transmission is supported, LAA is referred to as enhanced LAA (eLAA) however, it is noted that in such systems 5GHz WiFi and eLAA radios may be asynchronous such that interference between the two systems may occur and cause damage to receiver path components such as Low Noise Amplifiers (LNAs) in the concurrent radios of the devices, particularly in cases where a particular antenna port isolation level cannot be guaranteed (e.g., ≧ 20dB antenna separation), WLAN transmission in the 5GHz RF Band may cause, for example, simultaneous active reception activity for other reception activities such as reception in a WLAN-U/LAA radio in certain receive bands (e.g. for reception in a WLAN-U/LAA radio) and RF reception path components saturation problems may exist for other reception activities such as in WLAN Tx-Tx radio bands (e.g. for WLAN-U/LAA radio) and may cause further interference to occur in a transmit in a WLAN path components that a transmit-Tx-co-interference and/Tx-interference may cause a-transmit-interference in a-transmit-interference and cause a transmit-cause a-transmit-channel interference in-transmit-receive-channel interference-transmit-only to be a-transmit-cause a-transmit-receive-transmit-cause a-receive-channel interference in a-transmit-receive-channel interference-transmit-channel interference-transmit-cause a-transmit.

Additionally, it is noted that coexistence between a WLAN and a WWAN (e.g., LAA) can cause the two radio systems to concurrently monitor and analyze a wireless link or channel to determine if the wireless link or channel is free for transmission. Such a permanent monitoring of the wireless link by two radio transmission (Tx) systems causes higher power consumption.

SUMMARY

In accordance with aspects of the present disclosure, a method for controlling a wireless device including a coexisting Radio Frequency (RF) and a second radio system is disclosed, the method including detecting within control logic circuitry when to issue a turn-on signal to a th radio system to transmit a signal with transmit circuitry in the radio system.

According to another aspect, a wireless device is disclosed that is operable with a coexisting Radio Frequency (RF) and a second radio system , the device including control logic circuitry configured to receive at least turn-on signals issued by a transceiver in the device to turn on at least transmit circuitry of a th radio system, further, the control logic circuitry is configured to control at least of the receiver circuitry or the transmit circuitry in the second radio system when the at least turn-on signals are issued to turn on at least transmit circuitry of the th radio system.

In another aspect , a wireless device operable with a coexisting Radio Frequency (RF) and a second radio system is disclosed, the device comprising means for receiving at least turn-on signals transmitted by a transceiver in the device to turn on at least transmit circuitry of the th radio system, further comprising means for controlling at least of the receiver circuitry or the transmit circuitry in the second radio system when the at least turn-on signals are transmitted to turn on at least transmit circuitry of the th radio system.

According to a further aspect , a non-transitory computer-readable medium storing computer-executable code is disclosed that includes code to cause a computer to trigger control logic circuitry configured to control at least of receive circuitry or transmit circuitry in a th radio system within a wireless device having multiple co-existing RF radio systems, wherein the triggering includes issuing at least turn-on signals to the control logic circuitry to turn on at least transmit circuitry of a second radio system.

According to a further aspect, methods are disclosed for controlling a wireless device comprising coexisting 0 and second radio systems, the method comprising controlling and second radio systems to avoid damage from each other during transmission on at least channels of a shared spectrum between the and second radio systems, furthermore controlling th or second radio systems comprises determining whether at least of the or second radio systems is transmitting on at least channels by reading control messages or information messages sent between the th and second radio systems within the wireless device, furthermore, based on determining that at least of the 3937 th or second radio systems is transmitting or is to be transmitting, sending notification messages to the at least 632 of the or second radio systems which are monitoring the at least 632 channels to request transmission on the at least 638 channels, the notification messages being configured to be transmitted on at least channels.

In another aspect, a wireless device is disclosed that is operable with a coexisting Radio Frequency (RF) and a second radio system . the device includes processing circuitry configured to determine whether at least of the or second radio system is transmitting on at least channels by reading a control message or information message sent between the and second radio systems within the wireless device, and , the processing circuitry is configured to send a notification message to at least of the or second radio system that is monitoring the at least channels to request a transmission on the at least channels based on determining that of the or second radio system is transmitting or is about to transmit, the notification message configured to indicate that another radio system is currently transmitting on the at least channels.

In a still further aspect , a apparatus is disclosed for controlling a wireless device comprising 0 th and second radio systems that coexist, the apparatus comprising means for determining whether at least 3 of the 2 th or second radio system is transmitting on at least 4 channels by reading a control message or an information message sent between the 1 th and second radio systems within the wireless device, the apparatus further comprising means for sending a notification message to at least of the radio system or the second radio system that is monitoring the at least channels for transmission on the at least channels based on determining that the of the th or second radio system is transmitting or is about to transmit, the notification message configured to indicate that another radio system is currently transmitting on the at least channels.

In a further to step, non-transitory computer-readable media storing computer-executable code for causing a computer to control th and second coexisting radio systems to avoid damage from each other during transmission on at least channels of a shared spectrum between th and second radio systems, the controlling including determining whether at least 6 of the or second radio systems are transmitting on at least channels by reading control or information messages sent between the th and second radio systems within a wireless device, additionally, sending a notification message to at least of the or second radio systems that are monitoring the at least channels to request transmission on the at least channels based on determining that the th or second radio system is transmitting or is about to transmit, the notification message configured to indicate that another radio system is currently transmitting on at least channels.