Wireless network device and wireless network control method

• US 9,635,619 B2
• Filed: 06/15/2015
• Issued: 04/25/2017
• Est. Priority Date: 06/16/2014
• Status: Active Grant

• Current Assignee: Accton Technology Corporation
• Original Assignee: Accton Technology Corporation
• Inventors: Liu, Chao-Pin, Kung, Hua-Chung, Liu, I-Ru, Yu, Ji-Shang, Lo, Wen-Pin, Kang, Hsin-Hsiung
• Primary Examiner(s): Chery, Dady
• Application Number:
  US14/739,706
• Publication Number:
  US 20150365955A1
• Time in Patent Office: 680 Days
• Field of Search: 343853, 343893
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 21/205 providing an omnidirectional coverage turnstile aerials H01Q21/26
• CPC Class Codes: H04B 1/00 Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
• CPC Class Codes: H04B 7/0408 using two or more beams, i.e. beam diversity
• CPC Class Codes: H04W 52/16 Deriving transmission power values from another channel
• CPC Class Codes: H04W 52/42 in systems with time, space, frequency or polarisation diversity
• CPC Class Codes: H04W 88/00 Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices

Abstract

A wireless network device includes an antenna array and a lobe interleaver. The antenna array includes a plurality of antenna elements with different squint angles. The lobe interleaver is coupled to the antenna elements and has a plurality of output lobe ports. The lobe interleaver divides and interleaves the radio signal of the antenna array with the same phase and the same power to generate a plurality of lobes with different squint angles. The number of lobes is twice the number of antenna elements.

Claims

1. A wireless network device, comprising:

an antenna array, comprising a plurality of antenna elements with different squint angles; and

a lobe interleaver, coupled to the antenna elements and having a plurality of output lobe ports, wherein the lobe interleaver allocates and interleaves a radio signal of the antenna array with same phase and same power to generate a plurality of lobes of different squint angles, and the number of lobes is twice the number of antenna elements.

2. The wireless network device as claimed in claim 1, wherein the squint angles of the antenna elements are distributed uniformly and sequentially in a round angle, and the squint angles of the lobes are distributed uniformly and sequentially in the round angle.

3. The wireless network device as claimed in claim 1, wherein the lobe interleaver has a plurality of power dividers, and the number of power dividers is three times the number of antenna elements.

4. The wireless network device as claimed in claim 1, wherein the antenna elements comprises a first antenna and at least one second antenna and a third antenna on the contrary of the first antenna, and the lobe interleaver comprises a first power division unit and at least one second power division unit and a third power division unit corresponding to the first power division unit, and the first power division unit connects to the first antenna to generate a first lobe and a second lobe of the lobes, and the second power division unit connects to the second antenna to generate a third lobe and a fourth lobe of the lobes, and the third power division unit connects to the third antenna to generate a fifth lobe and a sixth lobe of the lobes, and each one of the first power division unit, the second power division unit and the third power division unit has three power dividers comprising a first power divider, a second power divider and a third power divider.

5. The wireless network device as claimed in claim 4, wherein in the first power division unit:

the first power divider has a power input port connected to the first antenna and a first power output port for outputting the second lobe to a second output lobe port of the output lobe ports;

the second power divider has a power input port connected to a second power output port of the first power divider and a first power output port connected to the second power division unit; and

the third power divider has a first power input port connected to a second power output port of the second power divider, a second power input port connected to the third power division unit, and a power output port for outputting the first lobe to a first output lobe port of the output lobe ports.

6. The wireless network device as claimed in claim 5, wherein the first power output port of the second power divider of the first power division unit connects to a second power input port of the third power divider of the second power division unit, and the second power input port of the third power divider of the first power division unit connects to a first power output port of the second power divider of the third power division unit.

7. The wireless network device as claimed in claim 6, wherein each of the first power division unit, the second power division unit and the third power division unit has a phase trimmer, and the phase trimmer is coupled between the second power output port of the second power divider and the first power input port of the third power divider in the first power division unit, the second power division unit and the third power division unit correspondingly.

8. The wireless network device as claimed in claim 1, further comprising:

a multiplex switching unit, receiving the lobes by coupling the output lobe ports included by the lobe interleaver, and having a plurality of output radio ports; and

a radio unit, coupled to the multiplex switching unit for modulating and/or demodulating the radio signal.

9. The wireless network device as claimed in claim 8, further comprising a control unit coupled between the multiplex switching unit and the radio unit for controlling the multiplex switching unit to switch to the at least one of the output lobe ports according to intensity and/or quality of the radio signal.

10. A wireless network control method, comprising:

receiving a radio signal of an antenna array, wherein the antenna array comprises a plurality of antenna elements of different squint angles; and

allocating and interleaving the radio signal of the antenna array with same phase and same power to generate a plurality of lobes of different squint angles, wherein the wireless network control method further comprises;

receiving and allocating the radio signal of an antenna into two first power signals by a power division unit;

dividing one of the first power signals into two second power signals, regarding another first power signal as a lobe, and outputting the lobe by the power division unit;

outputting one of the second power signals to a next-stage power division unit on the contrary of the power division unit by the power division unit;

receiving a third power signal from a former-stage power division unit on the contrary of the power division unit by the power division unit;

interleaving another second power signal and the third power signal and outputting such interleaved result as another lobe; and

setting the number of lobes to twice the number of antenna elements.

11. The wireless network control method as claimed in claim 10, further comprising:

distributing the squint angles of the antenna elements uniformly and sequentially in a round angle, wherein the squint angles of the lobes are distributed uniformly and sequentially in the round angle.

12. The wireless network control method as claimed in claim 10, further comprising:

allocating and interleaving the radio signal of the antenna array with same phase and same power by a plurality of power dividers of the power division unit, the next-stage power division unit and the former-stage power division unit, wherein the number of power dividers is three times the number of antenna elements.

13. The wireless network control method as claimed in claim 12, wherein the power divider comprises at least one power splitter and at least one power combiner, and the number of power splitters is twice the number of power combiners.

14. The wireless network control method as claimed in claim 10, further comprising switching the lobes by a multiplex switching unit to a radio unit according to intensity and/or quality of the radio signal.

15. A wireless network device, comprising:

an antenna array, comprising a plurality of antenna elements of different squint angles; and

a power divider, coupled to a first antenna and a second antenna of the plurality of antenna elements, and allocating and interleaving a radio signal of the antenna array with same phase and same power to generate at least one lobe, wherein a squint angle of the e lobe is an average value of squint angles of the first antenna and the second antenna.

16. The wireless network device as claimed in claim 15, wherein the number of lobes is twice the number of antenna elements, and the number of power dividers is three times the number of antenna elements.