TWI615055B - Access point assisted spatial reuse - Google Patents

Abstract

The present invention describes a wireless device acting as an AP or GO that collects information including transmission opportunity (TxOP) status and interference threshold from a station communicating with the AP/GO. When the collected information changes from previously collected information, the AP/GO broadcasts the collected information to a station communicating with the wireless device in a broadcast frame (eg, a beacon frame). The beacon frame can include an interference threshold for each side of a link. The stations can then adjust their transmission power to remain within the associated interference thresholds of the stations.

Description

Access point assisted space reuse technology Field of invention

Embodiments relate to wireless networks. Some embodiments relate to wireless local area networks (WLANs), Wi-Fi networks, and networks that operate in accordance with one of the IEEE 802.11 standards, such as the IEEE 802.11ac standard or the IEEE 802.11ax SIG (named DensiFi). Some embodiments relate to high efficiency wireless or high efficiency WLAN (HEW) communications. Some embodiments relate to Wi-Fi channel space reuse.

Background of the invention

The Institute of Electrical and Electronics Engineers (IEEE) 802.11 is a set of standards for implementing wireless local area network (WLAN) communications. These standards provide the basis for the approval and licensing of wireless network devices as Wi-Fi devices.

Wi-Fi networks typically use an access point (AP) to wirelessly communicate with any Wi-Fi enabled mobile device (eg, a smartphone, computer, tablet). The AP can be connected to a wired network that gives access to APs such as the Internet. A Wi-Fi enabled device can then access the Internet via communication with the AP over the wireless channel.

Due to the constant use of mobile users trying to access the Internet The number of devices with Wi-Fi capabilities is increasing. APs and wireless channels can become obsolete due to excessive Wi-Fi enabled devices.

Therefore, there is a general need for increased efficiency in the use of Wi-Fi channels.

According to an embodiment of the present invention, a wireless device is specifically provided, comprising: a processor and a circuit configured to collect a transmission transmission opportunity (TxOP) state from a station communicating with the wireless device; Interfering with the information of the threshold, and when the collected information is different from a previously collected information, the processor and the circuit are configured to control the collected information to be broadcast in a broadcast frame to communicate with the wireless device Broadcast of the station.

100‧‧‧Access Point (AP)

101, 102, 103, 104, 105, 106, 107‧‧‧ Taiwan (STA)

200‧‧‧Beacon frame

210, 220‧‧‧ frames

230‧‧‧TX/RX pair/master pair

231, 232‧‧‧TX/RX pairs

301, 303, 305‧‧‧ blocks

401‧‧‧Information

403‧‧‧

501‧‧‧Master control letter

502, 503, 505‧‧‧ frames

504‧‧‧Competition cycle

508‧‧‧HEW resource sharing controlled pair sending

530‧‧‧Old NAV RTS time

531‧‧‧Old NAV CTS time

532‧‧‧HEW allows shared vector (OSV)

601‧‧‧HEW master control pair

603‧‧‧HEW controlled pair

610‧‧‧Master to TX/WiFi device

611‧‧‧Master to RX/WiFi device

613‧‧‧Controlled to TX/WiFi devices

614‧‧‧Controlled RX/WiFi devices

700‧‧‧Wireless communication device/wireless station

702‧‧‧ processor

704‧‧‧ main memory

706‧‧‧ Static memory

708‧‧‧ link

710‧‧‧ display unit

712‧‧‧Text input device

716‧‧‧ storage device

718‧‧‧Signal generator

720‧‧‧Network interface device

722‧‧‧ computer readable media

724‧‧‧Information structure and instructions

726‧‧‧Communication network

FIG. 1 illustrates a diagram of a WiFi network in accordance with various embodiments.

2 illustrates a diagram of a WiFi AP/group owner signaling and sharing process in accordance with various embodiments.

3 illustrates a flow diagram of a method for AP-assisted space reuse, in accordance with various embodiments.

4 illustrates a table showing beacon broadcast information formats in accordance with various embodiments.

FIG. 5 illustrates a signaling diagram during transmission opportunity (TxOP) sharing, in accordance with various embodiments.

Figure 6 illustrates a diagram of a candidate controlled pair for making a decision, in accordance with various embodiments.

Figure 7 illustrates a block diagram of a wireless communication device.

Detailed description of the preferred embodiment

The following description and the drawings are intended to be illustrative of the embodiments Other embodiments may be combined with structural, logical, electrical, processing, and other changes. Portions and features of some embodiments may be included in or substituted for parts and features of other embodiments. The embodiments set forth in the scope of the patent application cover all available equivalents of the technical solutions.

Embodiments relate to wireless communication. Some embodiments relate to high efficiency wireless communications, including high efficiency Wi-Fi/WLAN and High Efficiency Wireless (HEW) communications. Some embodiments relate to wireless communication in accordance with one of the IEEE 802.11 standards, including the High Efficiency WLAN Research Group (HEW SG), now the IEEE 802.11ax Mission Group.

According to some IEEE 802.11ax (High Efficiency Wi-Fi (HEW)) embodiments, an access point may be configured to compete for wireless media (eg, during a contention period) for use in a HEW control cycle (ie, TxOP) A console operation that receives exclusive control of the media. The TxOP period is a period of time during which the station has no contention access to the channel during which the stations can transmit as many frames as possible. The master station can transmit a HEW master synchronous transmission at the beginning of the HEW control period. During the HEW control cycle, the HEW station can communicate with the console based on non-competitive multi-access technology. This communication is different from conventional Wi-Fi communication in which the device communicates based on a contention-based communication technology rather than a multiple access technology. During the HEW control cycle, the console can use one or more HEW frames to communicate with the HEW station. During the HEW control cycle In the meantime, the old version of the station avoids communication. In some embodiments, the master synchronous transmission may be referred to as HEW control and scheduled transmission.

In some embodiments, the multiple access technique used during the HEW control period may be a scheduled orthogonal frequency division multiple access (OFDMA) technique, but this is not required. In some embodiments, the multiple access technology may be a Time Division Multiple Access (TDMA) technique or a Frequency Division Multiple Access (FDMA) technique. In some embodiments, the multiple access technology may be a sub-space multiple access (SDMA) technique.

The console can also communicate with the old station based on the old IEEE 802.11 communication technology. In some embodiments, the console may also be configured to communicate with the HEW station outside of the HEW control period in accordance with the legacy IEEE 802.11 communication technology, but this is not a requirement.

In some embodiments, the links of the HEW frames may be combined to have the same bandwidth, and the bandwidth may be one of 20 MHz, 40 MHz, or 80 MHz adjacent bandwidth or 80+80 MHz (160 MHz) non-adjacent. bandwidth. In some embodiments, a 320 MHz adjacent bandwidth can be used. In some embodiments, a bandwidth of 5 MHz and/or 10 MHz can also be used. In these embodiments, each link of the HEW frame can be configured to transmit or receive a number of spatial streams.

An increased number of mobile users are attempting to access the Internet on the wireless channel via the AP. Similarly, the wireless channel between the group owner (GO) and the station in WiFi Direct communication is becoming more and more crowded. Therefore, the wireless channel can become congested due to excessive Wi-Fi enabled devices. The embodiments described subsequently will broadcast messages from APs and/or GOs (examples) For example, beacon messages) for space reuse and power control.

Wireless devices are then referred to as stations, APs, GOs, and/or equipment. A wireless device can encompass any communication device having at least one radio and at least one antenna for communicating over a wireless channel.

FIG. 1 illustrates a diagram of a WiFi network in accordance with various embodiments. The network may include a plurality of stations (such as STAs 101 to 107 of non-AP stations) and an AP 100. In an embodiment, the AP 100 can be coupled to the Internet via a landline or wireless channel.

The two pairs of stations 101, 102 and 105, 106 can communicate via a WiFi Direct protocol (i.e., device-to-device, D2D). In this embodiment, one of each pair 101, 102 and 105, 106 can be a GO to control access to channels between devices in each respective group. These stations may be referred to as D2D_STA _GO (P) and D2D_STA _GO (M) for GO stations and D2D_STA _non-GO (Q) and D2D_STA _non-GO (N) for non-GO stations.

Although FIG. 1 shows a pair of stations 101, 102 and 105, 106 that communicate using WiFi Direct, those skilled in the art will appreciate that multiple stations can communicate using WiFi Direct. For example, WiFi Direct may include one station to one station or one station to multiple stations, where one of the stations is GO. The GO station can have the same role as the AP within the WiFi Direct group.

Another 107 is shown communicating with the AP 100. This station is within the communication range 120 of the AP, but is not considered part of the transmission/reception pair, as described later.

The AP of FIG. 1 can transmit the beacon frame to all of the stations 101 to 107 within the AP beacon coverage area 120. Beacon frame as known in the art It is a management frame in IEEE 802.11. The beacon frame may contain information about the network and may be periodically transmitted by the AP to announce the presence of a wireless local area network (WLAN).

According to IEEE 802.11, beacons may include a Media Access Control (MAC) header, a frame body, and a Frame Check Sequence (FCS). Additional fields may include timestamps, beacon intervals, and ability information. According to the embodiments described below, broadcast frames (e.g., beacon frames) broadcast additional information for spatial reuse and power control. Space reuse is a technique that increases the efficiency of WiFi networks.

2 illustrates a diagram of a WiFi AP/GO signaling and sharing process in accordance with various embodiments. 2 shows three transmission/reception (TX/) pairs: 100, 104 (or 103); 105, 106; and 101, 102. For example, the first TX/RX pair can be AP 100 (TX1) and station 104 (RX1) in communication with AP 100. The first TX/RX pair can also be the other of the GO stations and their respective groups. The first TX/RX pair 230 can be considered a master pair, while the other TX/RX pairs 231, 232 can be considered a controlled pair.

The AP 100 or GO (e.g., TX1) broadcasts the beacon frame 200. Referring to Figure 1, each beacon can be associated with the interference threshold value T (x) and T (y) of the master 103 receives a candidate STA _AP (x) 104 and STA _AP (y). If the GO is broadcasting the beacon frame 200, the master pair candidate and the interference threshold may be the same as in the AP broadcast embodiment. The first pair (eg, a master pair) can be considered a pair that is attempting space reuse.

The master pair 230 can then transmit a frame between the AP/GO and the pair during the Network Allocation Vector (NAV) time (eg, TxOP sharing) 210, 220. As is known in the art, a NAV may indicate when the transmitting station intends to keep the media busy.

In the implementation of spatial reuse using Transmission Power Control (TPC), AP/GO information (eg, data transmitted by AP/GO) may be the primary control pair candidate information and its respective interference threshold. There may be multiple embodiments for broadcasting AP/GO information. For example, in a full resolution embodiment, the AP/information may include master-to-candidate information (STA address or ID of the station communicating with the AP/GO) and its associated interference threshold. In a group resolution embodiment, the AP/GO information may include master-pair candidate and group-associated interference thresholds that are grouped for some features, such as modulation and coding scheme (MCS) levels. Another embodiment may broadcast only one interference threshold. This embodiment can be adapted for D2D communication. The transmitter can then adjust its transmit power to remain within its associated interference threshold. The interference threshold is only for the master pair broadcast and not for the controlled pair broadcast. The controlled pair can check the interference threshold of the master pair to ensure that its transmission does not introduce interference that is more than the interference allowed by the broadcast interference threshold to the master pair.

3 illustrates a flow diagram of an embodiment of a method for AP/GO assisted space reuse. Each AP/GO sharing its own transmission opportunity (TxOP) with other transmission pairs, AP/GO can broadcast its shared information as shown in Figure 3 and described subsequently. Sharing information can be broadcast regularly. The period can be measured in seconds or milliseconds, as determined by system configuration or implementation.

In block 301, the AP/GO may collect sufficient information from other stations communicating with the AP/GO to implement the decision in block 303. Due to the different algorithms/squares that should be present during the TxOP shared space reuse phase In the case, the collected information may vary depending on the embodiment.

For example, in one embodiment, the station information collected by the AP/GO from each of its connected stations may include whether the station can share its transmission as the owner of the TxOP (eg, transmission opportunity status). If the station has this capability, the station information may also include the value of the allowable interference threshold.

In block 303, the AP/GO may use the collected information to make a decision as to whether the sharing status, interference threshold, and/or power control information has changed compared to the previous broadcast information. For example, when the master pair moves closer together, the interference threshold of the stations can change (eg, increase) from the previous interference threshold. If the answer is no, the method returns to block 301 to continue another cycle of information collection. If the answer is yes, the method proceeds to block 305 to broadcast the information collected in block 301 in the beacon frame.

In block 305, the AP/GO may broadcast the collected information to a neighbor station (e.g., a device supporting IEEE 802.11ax) that also supports TxOP sharing as described later. The collected information can be broadcast to the network in the beacon frame. Thus, a station (e.g., a wireless device) that communicates with the AP/GO can then communicate during the NAV time.

As in the above embodiment, the collected information can be broadcast by the beacon frame in multiple ways. In a full resolution embodiment, the master pair candidate information (the STA address or ID connected to the AP) and associated interference thresholds may be broadcast. In a group resolution embodiment, the master pair candidate may be grouped for some features, such as the MCS level, and the group related interference threshold may be broadcast. In another embodiment, only one interference threshold can be broadcast: this implementation The example can be adapted for D2D connections.

The transmission power of the stations can be adjusted based on the interference threshold for the master to broadcast. For example, the full transmission power of the station can result in a worst-case interference level from the channel of the station. If the interference level results in a higher interference level than the broadcast threshold, the station can adjust its transmission power to reduce interference and meet the threshold.

4 illustrates a table showing beacon broadcast information formats in accordance with various embodiments. The illustrated embodiment is directed to the full resolution embodiment discussed previously. The information contained in the table of Figure 4 is for illustrative purposes only, as other embodiments may contain additional or less information (e.g., effective range, bit length) in different formats. Other embodiments may be useful for this particular embodiment.

Figure 4 shows different types of information 401 that can be broadcast in a beacon frame. This information may include: the number of candidate stations shared for TxOP (NumCandidates); the MAC address of the first candidate shared by TxOP (STA_1_MAC_Address); the AP/GO side of the communication when the first station shares its TxOP Interference threshold (IT_AP_1); and the interference threshold (IT_STA_1) on the station side of the communication when the first station shares its TxOP.

The table shows that these elements can start at the first candidate and rise to the Nth (eg, last) station candidate. This is illustrated by the following table elements: the MAC address of the last station candidate shared by the TxOP (STA_N_MAC_Address); the interference threshold (IT_AP_N) of the AP/GO side of the communication when the last station shares its TxOP. And the interference threshold (IT_STA_N) on the station side of the communication when the last station shares its TxOP. Among the above elements, "N" is the NumCandidates in the case of non-zero value.

Another row 403 of the table shows the valid range of each element of the beacon broadcast information. For example, NumCandidates can have a valid range of 0 to 255. There is no applicable (N/A) range for STA_1_MAC_Address, since this element can be any legal MAC address available. The IT_AP_1 to IT_AP_N and IT_STA_1 to IT_STA_N elements may each have an effective value in the range of -128 dBm to 127 dBm.

In one embodiment, the information in the table of Figure 4 can be included as a new field in the current beacon message from the AP/GO. In another embodiment, the information in the table can be broadcast in a new beacon frame from AP/GO with a longer period.

Figure 5 illustrates a signaling diagram during TxOP sharing in accordance with various embodiments. The transmission map shows a signaling 501 between the HEW resource sharing master pair P ₀ between the first transmitter (TX0) and the first receiver (RX0). The figure further shows having N transmitters (TX1 to TXN) and N receiver (RXl to RXN) of HEW controlled sharing of resources between the transmitter 508 pairs of P ₁ to P _N.

The master-to-signal 501 includes a transmission of a request to send (RTS) frame 502 by TX1 to RX1 and a response transmission of a clear to send (CTS) frame 503 by RX1 to TX1 after the contention period 504. These frames 502, 503 can transmit power completely. Subsequent transmissions of the Aggregated MAC Protocol Data Unit (A-MPDU) frame may be transmitted using power controlled application transmissions. The transmission of such frames 502, 503, 505 may be during TxOP sharing.

As known in the art, A-MPDUs by multiple frames Combine them into a larger frame to provide multiple frames for each single access to the media. The received A-MPDU frame can be split into individual packets at the hardware level. According to the IEEE 802.11 standard, A-MPDUs can be as large as 64 kilobytes in size. When the A-MPDU is captured, it is passed to the application level as the number of decapsulation packets that look like other packets.

Show the old version of NAV RTS time 530 and NAV CTS time 531. These are the older (eg, IEEE 802.11ax pre-HEW) transmitters and receivers intended to keep the media busy. Therefore, there is no interference between the legacy device and the HEW device. The HEW allowed open-to-sharing vector (OSV) 532 also appears during this time.

The HEW resource sharing controlled pair of signaling 508 shows the RTS/CTS and A-MPDU signaling between the TXN/RXN pairs. These frames are also transmitted during transmission power control.

A master pair that can be defined as the current TxOP owner can be reserved by the RTS/CTS frame. This is a typical method defined in the current WiFi specification. One of the two devices of the master pair is an AP or a GO.

The controlled pair that has received the shared broadcast message from the AP/GO of the current master pair checks the conditions for space reuse and applies power control. The application of space reuse inspection and power control can be implemented as described later with reference to Figure 6 of the drawings.

Figure 6 illustrates a diagram of a candidate controlled pair for making a decision, in accordance with various embodiments. This figure shows a HEW master pair 601 comprising TX 610 and RX 611. For the sake of brevity, FIG. 6 shows only one possible HEW controlled pair 603, which includes TX 613 and RX 614. This figure illustrates the WiFi device 610, Propagation loss between any of 611, 613, 614.

來表示。主控對TX 610與潛在受控對RX 614之間的傳播損失可由

來表示。主控對TX 610與潛在受控對TX 613之間的傳播損失可由

來表示。潛在受控對TX 613與潛在受控對RX 614之間的傳播損失可由

來表示。潛在受控對TX 613與主控對RX 611之間的傳播損失可由

來表示。主控對RX 611與潛在受控對RX 614之間的傳播損失可由

來表示。此等值之使用將隨後在判定容許傳輸功率過程中說明。 For example, the propagation loss between the TX 610 and the RX 611 master pair can be

To represent. The propagation loss between the master pair TX 610 and the potentially controlled pair RX 614 can be

To represent. The propagation loss between the master pair TX 610 and the potentially controlled pair TX 613 can be

To represent. The propagation loss between the potentially controlled pair TX 613 and the potentially controlled pair RX 614 may be

To represent. The potential loss between the TX 613 and the master to the RX 611 can be

To represent. The propagation loss between the master pair RX 611 and the potentially controlled pair RX 614 can be

To represent. The use of such values will then be described in the process of determining the allowable transmission power.

As a first step in determining the maximum allowable transmission power, the maximum allowable transmission power on the TX/RX side of the controlled candidate pair can be defined as:

表示受控候選者對之TX側上的最大容許傳輸功率(以dBm表示)，

表示受控候選者對之RX側上的最大容許傳輸功率(以dBm表示)，

表示主控對之TX側上的最大容許干擾臨限值(以dBm表示)，且

表示主控對之RX側上的最大容許干擾臨限值(以dBm表示)。

及

干擾臨限值兩者接收自信標廣播訊息資訊，如先前參考圖3之流程圖所論述。 among them

Representing the maximum allowable transmission power (in dBm) on the TX side of the controlled candidate pair,

Indicates the maximum allowable transmission power (in dBm) on the RX side of the controlled candidate pair,

Indicates the maximum allowable interference threshold (in dBm) on the TX side of the master pair, and

Indicates the maximum allowable interference threshold (in dBm) on the RX side of the master pair.

and

Both of the interference thresholds receive the confidence broadcast broadcast message information as previously discussed with reference to the flowchart of FIG.

As a second step in determining the maximum allowable transmission power, the signal-to-interference plus noise ratio (SINR) is estimated to check for potential link efficiency. This step can be achieved by the following equation:

表示受控對傳輸器側中的估計之接收SINR，

表示受控對接收器側中的估計之接收SINR，

表示受控傳輸器處的非受控干擾加雜訊之功率位準(以dB尺度計)，且

表示受控傳輸器處的非受控干擾加雜訊之功率位準(以dB尺度計)。 among them

Represents a controlled received SINR for the estimate in the transmitter side,

Represents a controlled received SINR for the receiver in the receiver side,

The power level (in dB scale) representing the uncontrolled interference plus noise at the controlled transmitter, and

Indicates the power level of the uncontrolled interference plus noise at the controlled transmitter (in dB scale).

及

而再利用TxOP。 If the estimated SINR satisfies the predefined rate threshold of the link, the potentially controlled pair may try to reduce the power according to

and

And then use TxOP.

As a third step in the process of determining the maximum allowable transmission power, the controlled candidate pair may try to reuse the TxOP owned by the master pair to perform spatial reuse. The controlled candidate pair may also check the following conditions before the official data transmission: the transmission is not in the NAV phase (excluding the NAV setting from the CTS/RTS of the master pair) and the CCA limitation can be met (excluding the signal from the master pair) Power level).

7 illustrates a block diagram of a wireless communication device 700 (eg, a Wi-Fi device) in which a set or series of instructions can be executed to cause the device to perform any of the methods discussed herein. . In an alternate embodiment, the device operates as a standalone device or can be connected (eg, networked) to other devices. In a networked deployment, the device can operate in the capacity of a server or client device in a server-client network environment, or the device can act as a peer device in a peer-to-peer (or decentralized) network environment. Device can be Mobile communication device (eg, cellular phone), AP, GO, computer, personal computer (PC), tablet PC, hybrid tablet, personal digital assistant (PDA), or capable of executing instructions that specify actions to be performed by the device (sequence Or in any other way. In addition, although only a single device is described, the term "device" is also understood to include a device that individually or jointly performs a set (or sets) of instructions to perform any one or more of the methods discussed herein. Any collection. Similarly, the term "processor-based system" shall be taken to include the control or operation by a processor (eg, a computer) to perform the instructions individually or jointly to perform any one or more of the methods discussed herein. Any collection of one or more devices.

The example wireless station 700 includes at least one processor 702 (eg, a central processing unit (CPU), a graphics processing unit (GPU), or both, a processor core, a compute node, etc., in communication with one another via a link 708 (eg, a bus bar) ), main memory 704 and static memory 706. The wireless station 700 can further include a display unit 710 and an alphanumeric input device 712 (eg, a keyboard, keypad). In one embodiment, display unit 710 and input device 712 are incorporated into a touch screen display. Wireless station 700 can additionally include storage device 716 (e.g., a drive unit), signal generation device 718 (e.g., a speaker), network interface device 720, and one or more sensors (not shown). Not all of these components are used in all devices. For example, the AP may not include display 710 or input device 712.

The storage device 716 includes a computer readable medium 722 having stored thereon any one or more of the methods or functions described herein or by any one or more of the methods or functions described herein. By The data structure utilized and one or more sets of instructions 724 (eg, software). The instructions 724 may also reside wholly or at least partially within the main memory 704, the static memory 706, and/or reside within the processor 702 during execution by the wireless station 700, wherein the main memory 704, static memory 706 and processor 702 also form a computer readable medium. Embodiments can be practiced in one or a combination of hardware, firmware or software. Embodiments can also be implemented as instructions stored on a computer readable storage device, which can be read and executed by at least one processor to perform the operations described herein. The computer readable storage device can include any non-transitory mechanism for storing information in a form readable by a device (eg, a computer).

Although computer readable medium 722 is illustrated as a single medium in an example embodiment, the term "computer readable medium" can include a single medium or multiple mediums (eg, centralized or decentralized material) that store one or more instructions 724. Library, and / or associated cache and server). The term "computer-readable medium" shall also be understood to include instructions capable of storing, encoding or carrying any one or more of the means for performing the apparatus and causing the apparatus to perform the invention, or capable of storing, encoding or carrying, etc. Any tangible medium that directs or uses the data structure associated with such instructions. The term "computer readable medium" shall be taken to include, without limitation, solid state memory and optical and magnetic media. Specific examples of computer readable media include non-electrical memory including, but not limited to, for example, semiconductor memory devices (eg, electrically programmable read only memory (EPROM), electrically erasable, programmable, read only Memory (EEPROM) and flash memory devices; disks, such as internal hard disk drives and removable disks; magneto-optical disks; and CD-ROM and DVD-ROM disks.

The instructions 724 can be further transmitted or received over the communication network 726 using the transmission medium via the network interface device 720 using any of a number of well-known delivery protocols (e.g., HTTP). Examples of communication networks include regional networks (LANs), wide area networks (WANs), wireless local area networks (WLANs), the Internet, mobile telephone networks, plain old telephone (POTS) networks, and wireless data networks (eg, , WiFi (IEEE 802.11), 3GPP, 4G LTE/LTE-A or WiMAX network). The term "transmission medium" shall be taken to include any intangible medium that is capable of storing, encoding or carrying instructions for execution by the apparatus and that includes digital or analog communication signals or other intangible media to facilitate communication of the software. The network interface device can include one or more antennas for communicating with the wireless network.

Embodiments can be practiced in one or a combination of hardware, firmware or software. Embodiments can also be implemented as instructions stored on a computer readable storage device, which can be read and executed by at least one processor to perform the operations described herein. The computer readable storage device can include any non-transitory mechanism for storing information in a form readable by a device (eg, a computer). For example, computer readable storage devices may include read only memory (ROM), random access memory (RAM), disk storage media, optical storage media, flash memory devices, and other storage devices and media. In some embodiments, the system can include one or more processors and can be assembled using instructions stored on a computer readable storage device.

Additional notes and examples:

Example 1 is a wireless device comprising: a processor and circuitry configured to collect a transmission including a transmitter from a station in communication with the wireless device Information about the (TxOP) status and the interference threshold, and when the collected information is different from a previously collected information, the processor and the circuit are configured to control the collected information in a broadcast frame to The broadcast of the station of the wireless device communication.

In Example 2, the subject matter of Example 1 may optionally include wherein the processor and the circuit are further configured to control broadcast of the collected information by transmitting a beacon frame, the beacon frame including the following One of the beacon frames: the number of candidate stations for TxOP sharing; one of the media access control addresses of a candidate station; one of the APs or one of the GO side interference thresholds; and the chain One of the sides of the road interferes with the threshold.

In Example 3, the subject matter of Examples 1 through 2 may optionally include wherein the processor and circuitry are further configured to determine when a shared state, interference threshold, and/or power control information has been from a previous shared state. The interference threshold and/or power control information changes to determine when the collected information is different from the previously collected information.

In Example 4, the subject matter of Examples 1 through 3 may optionally include wherein the processor and circuitry are further configured to determine when the acquisition is determined by determining when an interference threshold has changed from a previous interference threshold. The information is different from the information previously collected.

In Example 5, the subject matter of Examples 1 through 4 may optionally include an access point in the WiFi network in which the wireless device is using one of the IEEE protocols.

In Example 6, the subject matter of Examples 1 through 5 may optionally include a group in which the wireless device communicates using the WiFi Direct protocol. A group owner in a wireless device.

In Example 7, the subject matter of Examples 1 through 6 may optionally include where the processor and circuitry are further configured to periodically broadcast the information.

In Example 8, the subject matter of Examples 1 through 7 may optionally include wherein the wireless device is one of an Access Point (AP) or a Group Owner (GO) and the processor and circuitry are further configured The information is collected at each of the stations connected to the AP or GO.

In Example 9, the subject matter of Examples 1 through 8 may optionally include a portion in which the wireless device shares a master pair with one of the other high efficiency wireless (HEW) resources.

In Example 10, the subject matter of Examples 1 through 9 may optionally include such a system HEW resource sharing controlled pair that is not part of the master pair communicating with the wireless device.

In Example 11, the subject matter of Examples 1 through 10 can optionally include wherein the wireless device includes a memory and at least one radio.

In Example 12, the subject matter of Examples 1 through 11 may optionally include wherein the broadcast frame further includes AP/GO information including the master pair candidate information and its associated interference threshold.

In Example 13, the subject matter of Examples 1 through 12 may optionally include wherein the broadcast frame further includes a master pair candidate and a group associated interference threshold including a modulation and coding scheme (MCS) hierarchical grouping. AP/GO information.

In Example 14, the subject matter of Examples 1 to 13 may optionally include wherein the wireless device is a GO and the broadcast frame is further included. Only one interference threshold for WiFi Direct communication.

Example 15 is a wireless device comprising: a processor and circuitry configured to collect a transmission from a wireless station communicating with an access point (AP) or group owner (GO) over a wireless link Information on the opportunity (TxOP) status and the interference threshold, and when the collected information is different from a previously collected information, broadcast the collected information to the AP or GO in a broadcast frame on the link. These wireless stations of communication.

In Example 16, the subject matter of Example 15 may optionally include wherein the processor and circuitry are further configured to determine a transmission (TX) side of the link and receive (RX) by a controlled pair of one of the wireless devices. The allowable transmission power on the side, where the permissible transmission power is:

表示該受控候選者對之該TX側上的容許傳輸功率，

表示該受控候選者對之該RX側上的容許傳輸功率，

表示一主控對之該TX側上的容許干擾臨限值，且

表示該主控對之該RX側上的容許干擾臨限值。 among them

Representing the allowable transmission power of the controlled candidate on the TX side,

Representing the allowable transmission power of the controlled candidate on the RX side,

Representing the allowable interference threshold on the TX side of a master pair, and

Indicates the allowable interference threshold on the RX side of the master pair.

Example 17 is a non-transitory computer readable storage medium storing instructions for execution by a processing circuit in an Access Point (AP) Auxiliary or Group Owner (GO) Space Reuse, operative to execute the space Reusing and transmission power control, the operations for assembling the processing circuit to: collect information including a transmission opportunity (TxOP) state and an interference threshold from a wireless station communicating with the AP or GO on a wireless link; And when the collected information is different from a previously collected information, the link will be on the link in a broadcast frame. The collected information is broadcast to the wireless stations that communicate with the AP or GO.

In Example 18, the subject matter of Example 17 may optionally include wherein the operations further determine the allowable transmission on the transmit (TX) side and the receive (RX) side of the link by a controlled candidate pair of the wireless device. Power, where the allowable transmission power is:

表示該受控候選者對之該TX側上的容許傳輸功率，

表示該受控候選者對之該RX側上的容許傳輸功率，

表示一主控對之該TX側上的容許干擾臨限值，且

表示該主控對之該RX側上的容許干擾臨限值。 among them

Representing the allowable transmission power of the controlled candidate on the TX side,

Representing the allowable transmission power of the controlled candidate on the RX side,

Representing the allowable interference threshold on the TX side of a master pair, and

Indicates the allowable interference threshold on the RX side of the master pair.

干擾臨限值及該

干擾臨限值。 In Example 19, the subject matter of Examples 17 through 18 can optionally include wherein the operations further receive the broadcast frame from the broadcast frame

Interference threshold and the

Interference threshold.

In Example 20, the subject matter of Examples 17 through 19 may optionally include wherein the operations further determine the estimated signal-to-interference plus noise ratio (SINR) by the following equations:

表示該受控對TX側中的一估計之接收SINR，

表示該受控對RX側中的一估計之接收SINR，

表示一受控傳輸器處的非受控干擾加雜訊之一功率位準，且

表示該受控傳輸器處的非受控干擾加雜訊之一功率位準。 among them

Representing the received SINR of the estimated pair of TX sides,

Representing the estimated received SINR for the controlled pair of RX sides,

Representing one of the uncontrolled interference plus noise at a controlled transmitter, and

Represents one of the uncontrolled interference plus noise power levels at the controlled transmitter.

Example 21 is a method for access point (AP) assisted space reuse, the method comprising: collecting a transmission opportunity (TxOP) from a plurality of wireless stations communicating with the AP or a group owner (GO) Information of the status and interference threshold; and broadcasting the collected information to the plurality of wireless stations communicating with the AP or GO in a broadcast frame, wherein the broadcast frame includes an association for each wireless station Permissible interference threshold.

In an example, the subject matter of Example 21 may optionally include wherein the plurality of wireless stations comprise one of the wireless stations, wherein the master pair includes the AP or GO.

In Example 23, the subject matter of Example 21 to Example 22 may optionally include wherein the master pair is one of the current transmission opportunities (TxOPs), the method further comprising the master pair sending by a request to send/clear (RTS/CTS) frame exchange to reserve the TxOP such that the master pair transmits a frame between the AP or GO and one of the master pairs during the TxOP.

In an example, the subject matter of Examples 21 through 23 may optionally include wherein the plurality of wireless devices comprise a controlled pair of wireless devices, the method further comprising: the controlled pair of the AP or GO from the master pair Receiving the broadcast frame: checking conditions for spatial reuse; and applying power control in response to interference thresholds in the broadcast frame.

The Abstract of the Invention is provided to allow the reader to determine the nature and substance of the technical disclosure. It is understood that it is not intended to limit or explain the scope or meaning of the scope of the patent application. The scope of the following patent application is hereby incorporated by reference in its entirety in its entirety in its entirety in its entirety in its entirety in its entirety in its entirety.

301, 303, 305‧‧‧ blocks

Claims (21)

A wireless device comprising: a processor and circuitry configured to collect information including a transmission opportunity (TxOP) status and an interference threshold from a station communicating with the wireless device, and when the collection When the information is different from a previously collected information, the processor and the circuit are configured to control the broadcast of the collected information in a broadcast frame to a station communicating with the wireless device, wherein the processor and the circuit are further Forming to determine when the collected information differs from the previous by determining when the shared state, interference threshold, and/or power control information has changed from a previous shared state, interference threshold, and/or power control information Information collected. The wireless device of claim 1, wherein the processor and the circuit are further configured to control broadcast of the collected information by transmitting a beacon frame, the beacon frame including a beacon signal including: Block: a number of candidate stations for TxOP sharing; one media access control address of one of the candidate stations; one of the APs or one of the GO side interference thresholds; and one of the stations An interference threshold. A wireless device as claimed in claim 1, wherein the wireless device is an access point in a WiFi network using one of the IEEE 802.11ax protocols. A wireless device as claimed in claim 1, wherein the wireless device is a group owner of a group of wireless devices communicating using the WiFi Direct protocol. The wireless device of claim 1, wherein the processor and the circuit are further The group is configured to broadcast the information periodically. The wireless device of claim 1, wherein the wireless device is one of an access point (AP) or a group owner (GO), and the processor and circuitry are further configured to self-connect to the AP or Each station of GO collects this information. A wireless device as claimed in claim 1, wherein the wireless device shares a portion of the master pair with one of the other stations of the High Efficiency Wireless (HEW) resource. The wireless device of claim 7, wherein the portion of the master pair that is in communication with the wireless device is a shared pair of HEW resources. The wireless device of claim 1, wherein the wireless device comprises a memory and at least one radio. The wireless device of claim 1, wherein the broadcast frame further comprises AP/GO information including a master pair candidate information and its associated interference threshold. The wireless device of claim 1, wherein the broadcast frame further comprises AP/GO information including a master pair candidate and a group associated interference threshold for modulation and coding scheme (MCS) hierarchical grouping. The wireless device of claim 1, wherein the wireless device is a GO and the broadcast frame further includes a unique interference threshold for WiFi Direct communication. A wireless device comprising: a processor and circuitry configured to collect a transmission opportunity (TxOP) from a wireless station communicating with an access point (AP) or a group owner (GO) over a wireless link State and interference threshold information, and when the collected information is different from a previously collected In the case of information, the collected information in a broadcast frame is broadcast on the link to the wireless stations communicating with the AP or GO. The wireless device of claim 13, wherein the processor and the circuit are further configured to determine a tolerance on a transmit (TX) side and a receive (RX) side of the link by a controlled candidate pair of the wireless device Transmission power, wherein the permissible transmission power is: among them Representing the allowable transmission power of the controlled candidate on the TX side, Representing the allowable transmission power of the controlled candidate on the RX side, Representing the allowable interference threshold on the TX side of a master pair, and Indicates the allowable interference threshold on the RX side of the master pair. A non-transitory computer readable storage medium storing instructions for execution in an access point (AP) assisted or group owner (GO) space reuse by processing circuitry to perform the space Reusing and transmission power control, the operations for assembling the processing circuit to: collect information including a transmission opportunity (TxOP) state and an interference threshold from a wireless station communicating with the AP or GO on a wireless link; And when the collected information is different from a previously collected information, the collected information in a broadcast frame is broadcasted on the link to the wireless stations communicating with the AP or GO, wherein the operations are further used. By combining the processing circuitry to determine when the shared state, interference threshold, and/or power control information has been A change from a previous shared state, interference threshold, and/or power control information determines when the collected information is different from the previously collected information. The non-transitory computer readable storage medium of claim 15, wherein the operations further determine an allowable transmission (TX) side and a receiving (RX) side of the link by a controlled candidate pair of the wireless device Transmission power, wherein the permissible transmission power is: among them Representing the allowable transmission power of the controlled candidate on the TX side, Representing the allowable transmission power of the controlled candidate on the RX side, Representing the allowable interference threshold on the TX side of a master pair, and Indicates the allowable interference threshold on the RX side of the master pair. The non-transitory computer readable storage medium of claim 16, wherein the operations further receive the broadcast frame from the broadcast frame Interference threshold and the Interference threshold. The non-transitory computer readable storage medium of claim 16, wherein the operations further determine an estimated signal to interference plus noise ratio (SINR) by: among them Representing the received SINR of the estimated pair of TX sides, Representing the estimated received SINR for the controlled pair of RX sides, Representing one of the uncontrolled interference plus noise at a controlled transmitter, and Represents one of the uncontrolled interference plus noise power levels at the controlled transmitter. A method for access point (AP) assisted space reuse, the method comprising the steps of: collecting a transmission opportunity (TxOP) status from a plurality of wireless stations communicating with the AP or a group owner (GO) And information of the interference threshold; and broadcasting the collected information to a plurality of wireless stations communicating with the AP or GO in a broadcast frame, wherein the broadcast frame includes an association for each wireless station The interference threshold is allowed, wherein the plurality of wireless stations comprise one of the wireless stations, wherein the master pair includes the AP or GO. The method of claim 19, wherein the master pair is one of a current transmission opportunity (TxOP), the method further comprising the master pair retaining by a request send/clear send (RTS/CTS) frame exchange The TxOP is such that the master transmits a frame between the AP or GO and one of the master pairs during the TxOP. The method of claim 20, wherein the plurality of wireless devices comprise a controlled pair of wireless devices, the method further comprising the step of: receiving the broadcast frame from the AP or GO of the master pair; Checking conditions for space reuse; and applying power control in response to interference thresholds in the broadcast frame.