Sub-band selection at cellular base station for non-overlapped or partially overlapped full duplex operation
地域：
GA
GA Atlanta
摘要
Aspects of the subject disclosure may include, for example, determining a self-interference channel response of a transceiver of a mobile base station having a transmitter and a receiver. The self-interference channel response spans multiple sub-bands of a predetermined mobile cellular frequency channel. A first sub-band of the multiple sub-bands is identified according to the self-interference channel response and, an estimate is determined, at the receiver, of a first coupled transmit power level of the transmitter when operating within the first sub-band. A receiver sensitivity is adjusted according to the first coupled transmit power level to obtain an adjustment adapted to increase receiver sensitivity, while restricting operation of the receiver to a substantially linear region. The adjustment allows a transmission within the first sub-band and a reception within a second sub-band of the plurality of sub-bands to occur simultaneously at the mobile base station. Other embodiments are disclosed.
說明書
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
The subject disclosure relates to a sub-band selection at cellular base station for non-overlapped or partially overlapped full duplex operation.
Full duplex operation in a radio frequency (RF) communication system allows a transceiver to transmit and receive wireless signals at the same time and within the same frequency band. During such operation the transceiver, e.g., a transceiver of a base-station, should ensure that its receiver is not overloaded with a signal transmitted by the base station itself, also known as self-interference.
For wireless communications, a local transmitter may communicate with a remote receiver, often over substantial distances. In such instances, the local transmitter may be adapted to provide a sufficiently high power level RF signal to overcome wireless link or path losses to a remote receiver. These link losses can be substantial, depending on separation distances, operational frequencies, obstructions and interference. For similar reasons, a local receiver may be adapted to receive weak or low power signals transmitted from a remote transmitter. A measure of the receiver's ability to detect a minimum received signal level may be referred to as the receiver's sensitivity.
權(quán)利要求
What is claimed is:1. A method, comprising:measuring, by a processing system including a processor, a self-interference channel response of a transceiver of a mobile base station comprising a transmitter and a receiver, wherein the self-interference channel response spans a plurality of sub-bands of a predetermined mobile cellular frequency channel; selecting, by the processing system, a first sub-band of the plurality of sub-bands according to the self-interference channel response; calculating, by the processing system and at the receiver, an estimate of a first coupled transmit power level of the transmitter when operating within the first sub-band; and adjusting, by the processing system, a receive level of the receiver according to the first coupled transmit power level to obtain an adjustment adapted to increase receiver sensitivity, while restricting operation of the receiver to a substantially linear region, the adjustment allowing a transmission within the first sub-band and a reception within a second sub-band of the plurality of sub-bands to occur simultaneously at the mobile base station. 2. The method of claim 1 , wherein the selecting the first sub-band further comprises:determining, by the processing system, a target region of the self-interference channel response having a self-interference channel response comparatively lower than another region of the self-interference channel response; and associating, by the processing system, the first sub-band with the target region. 3. The method of claim 2 , wherein the calculating the estimate of the first coupled transmit power level further comprises:determining, by the processing system, a transmit power level of the transmitter; and calculating, by the processing system, the first coupled transmit power level according to the transmit power level and the self-interference channel response of the target region. 4. The method of claim 1 , wherein each sub-band of the plurality of sub-bands accommodates a group of resource blocks determined according to an application of orthogonal frequency division multiplexing (OFDM). 5. The method of claim 1 , wherein the first sub-band at least partially overlaps the second sub-band at the mobile base station. 6. The method of claim 1 , further comprising:selecting, by the processing system, a third sub-band of the plurality of sub-bands according to the self-interference channel response; calculating, by the processing system and at the receiver, a second coupled transmit power level of the transmitter operating within the third sub-band; and adjusting further, by the processing system, the receive level of the receiver according to the first and second coupled transmit power levels to obtain the adjustment allowing a transmission within the first and third sub-bands and a reception within the second sub-band to occur simultaneously at the mobile base station. 7. The method of claim 1 , further comprising:determining, by the processing system, a non-linear figure of merit of the receiver, wherein the adjusting the receive level of the receiver occurs according to the non-linear figure of merit and the estimate of the first coupled transmit power level. 8. The method of claim 1 , wherein the adjusting of the receive level further comprises adjusting, by the processing system, one of amplification, attenuation or both. 9. The method of claim 1 , wherein a frequency resolution of the self-interference channel response is prescribed by a mobile network operator. 10. The method of claim 1 , wherein the predetermined mobile cellular frequency channel comprises a receiver frequency band of a channel allocation standardized according to the Third-Generation Partnership Project (3GPP). 11. The method of claim 1 , wherein the first and second sub-bands are assigned by a scheduler and comprises a group of physical resource blocks, each physical resource block of the group of physical resource blocks comprising twelve consecutive subcarriers for each one 0.5 millisecond time slot. 12. A device, comprising:a processing system including a processor; and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations comprising:determining a self-interference channel response of a transceiver of a mobile base station comprising a transmitter and a receiver, wherein the self-interference channel response spans a plurality of sub-bands of a predetermined mobile cellular frequency channel; selecting a first sub-band of the plurality of sub-bands according to the self-interference channel response; determining, at the receiver, an estimate of a first coupled transmit power level of the transmitter when operating within the first sub-band; and reducing a sensitivity of the receiver according to the first coupled transmit power level to maximum receiver sensitivity, while also maintaining operation of the receiver within a substantially linear region to permit simultaneous transmission within the first sub-band and reception within a second sub-band of the plurality of sub-bands at the mobile base station. 13. The device of claim 12 , wherein the selecting the first sub-band further comprises:determining a target region of the self-interference channel response having a self-interference channel response comparatively lower than another region of the self-interference channel response; and associating the first sub-band with the target region. 14. The device of claim 13 , wherein the determining the estimate of the first coupled transmit power level further comprises:determining a transmit power level of the transmitter; and calculating the first coupled transmit power level according to the transmit power level and the self-interference channel response of the target region. 15. The device of claim 12 , wherein operation of the transmitter within the first sub-band comprises applying orthogonal frequency division multiplexing (OFDM) to a transmit signal. 16. The device of claim 12 , wherein the first sub-band at least partially overlaps the second sub-band at the mobile base station. 17. A non-transitory, machine-readable medium, comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations, the operations comprising:determining a self-interference channel response of a transceiver of a mobile base station comprising a transmitter and a receiver, wherein the self-interference channel response spans a plurality of sub-bands of a predetermined mobile cellular frequency channel; identifying a first sub-band of the plurality of sub-bands according to the self-interference channel response; determining, at the receiver, an estimate of a first coupled transmit power level of the transmitter when operating within the first sub-band; and adjusting a receiver sensitivity according to the first coupled transmit power level to obtain an adjustment adapted to increase receiver sensitivity, while restricting operation of the receiver to a substantially linear region, the adjustment allowing transmission within the first sub-band and reception within a second sub-band of the plurality of sub-bands to occur simultaneously at the mobile base station. 18. The non-transitory, machine-readable medium of claim 17 , wherein the identifying the first sub-band further comprises:determining a target region of the self-interference channel response having a self-interference channel response comparatively lower than another region of the self-interference channel response; and associating the first sub-band with the target region. 19. The non-transitory, machine-readable medium of claim 18 , wherein the determining the estimate of the first coupled transmit power level further comprises:determining a transmit power level of the transmitter; and calculating the first coupled transmit power level according to the transmit power level and the self-interference channel response of the target region. 20. The non-transitory, machine-readable medium of claim 17 , wherein the first sub-band at least partially overlaps the second sub-band at the mobile base station.
意見反饋
使用該功能遇到問題