WO2013107116A1

WO2013107116A1 - Near-distance wireless communication device and method

Info

Publication number: WO2013107116A1
Application number: PCT/CN2012/074024
Authority: WO
Inventors: 陈霖; 郭阳; 支周; 郭胜祥
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-01-18
Filing date: 2012-04-13
Publication date: 2013-07-25
Also published as: CN102545972A

Abstract

A near-distance wireless communication device is disclosed, and the device includes at least a 60GHz communication module and a Wi-Fi communication module. The 60GHz communication module is configured for carrying out 60GHz communication; the Wi-Fi communication module is configured for carrying out Wi-Fi communication; and the 60GHz communication module and the Wi-Fi communication module work independently and/or work cooperatively. Accordingly, a near-distance wireless communication method is also disclosed. According to the present invention, the integration of a Wi-Fi technology and a 60 GHz technology can be realized, the communication efficiency of the application layer can be improved, and the coordination of MAC strategies is facilitated.

Description

Short-range wireless communication device and short-range wireless communication method

The present invention relates to wireless communication technologies, and in particular, to a short-range wireless communication device and a close-range wireless communication method. Background technique

Wi-Fi is a technology that wirelessly connects terminals such as personal computers and handheld devices (such as PDAs and mobile phones). The technical standards of Wi-Fi are formulated by the IEEE 802.11 working group of the International Standards Organization. Currently, Wi-Fi devices are widely used in various handheld terminals and become almost the standard configuration components of terminal devices. With the rapid spread of high-definition video and the demand for large-volume data communication, the lower transmission rate of Wi-Fi is increasingly unable to meet the requirements of practical applications.

As the level of device manufacturing has increased and the process has matured, 60 GHz wireless communication technology has gradually moved from theoretical research to practical application. The biggest advantage of 60GHz technology is that the transmission bandwidth is very wide. At 60GHz P, it can provide up to 5GHz transmission bandwidth, the transmission rate can reach IGps, and the occupied working frequency band is free of charge. Since the electromagnetic spectrum is a strong absorption peak around 60 GHz, the electromagnetic wave propagation attenuation in this frequency range is very large, so the typical transmission distance of 60 GHz communication technology is no more than 10 meters. This electromagnetic propagation characteristic not only defines the application scenario of the 60 GHz communication technology mainly for the indoor environment, but also makes space division multiplexing possible. Currently, 60 GHz standard development is accelerating, and several standards organizations have developed technical specifications for their 60 GHz communications, such as IEEE 802.11 ad, IEEE 802.15.3c, and ECMA-387 in Europe. The IEC also published the international standard 13156 based on the first edition of the ECMA-387 specification.

However, there are still some technical difficulties in the 60 GHz technology, which are mainly derived from the inherent propagation characteristics of the 60 GHz electromagnetic wave and the spatial channel characteristics determined by it. Such as: In the 60GHz band, electromagnetic Wave propagation is more manifested as a kind of light-like propagation. That is to say, in the 60 GHz band, if the target device does not fall within the pointing range of the current device antenna pattern, the electromagnetic wave cannot find the target device, resulting in a so-called "shadow". phenomenon". In order to solve this problem, in addition to adjusting the antenna pointing, the MAC layer must be designed for the directional antenna, which will affect the efficiency of the MAC layer to a certain extent and reduce the transmission rate of effective data.

Since Wi-Fi technology has been widely used in terminal equipment, and in the 2.4 GHz/5 GHz band, the diffraction phenomenon of electromagnetic wave propagation is obvious, unlike the optical propagation of 60 GHz electromagnetic waves, Wi-Fi technology can be compared with 60 GHz technology. Form an effective complement and use together. On the terminal device, it is possible to configure independent Wi-Fi devices and 60 GHz devices at the same time, and realize communication between the two at a high level in a software manner to cooperate and cooperate. However, the efficiency of communication in the application layer is low, and it is not conducive to coordinate and unified control of the MAC policies of the two devices. Summary of the invention

In view of this, the main purpose of the embodiments of the present invention is to provide a short-range wireless communication device and a short-range wireless communication method, which can realize the fusion of Wi-Fi technology and 60 GHz technology, and can improve application layer communication efficiency, which is beneficial to MAC. Strategy coordination.

To achieve the above objective, the technical solution of the embodiment of the present invention is implemented as follows:

A short-range wireless communication device, comprising at least a 60 GHz communication module and a Wi-Fi communication module; wherein

The 60 GHz communication module is configured to perform 60 GHz communication;

The Wi-Fi communication module is configured to perform Wi-Fi communication,

The 60 GHz communication module and the Wi-Fi communication module operate independently and/or cooperate.

The PHY layers of the 60 GHz communication module and the Wi-Fi communication module are independent of each other and shared by the MAC layer.

The shared MAC layer is configured to be responsible for communication, joint scheduling, and control coordination between the 60 GHz communication module and the Wi-Fi communication module. The PHY layers of the 60 GHz communication module and the Wi-Fi communication module are independent of each other, the MAC layers are independent of each other, and the RLC layer is shared.

The shared RLC layer is configured to be responsible for communication, joint scheduling, and control coordination between the 60 GHz communication module and the Wi-Fi communication module.

A short-range wireless communication method, wherein a 60 GHz communication module of a short-range wireless communication device independently transmits a connection establishment request/response, and/or transmits a connection establishment request/response through a Wi-Fi communication module of the short-range wireless communication device, The method includes:

When a short-range wireless communication device uses a 60 GHz communication module for high-rate data communication, one-hop or multi-hop relay transmission is performed using other short-range wireless communication devices in an idle state nearby.

The short-range wireless communication device performs one-hop or multi-hop relay transmission using other short-range wireless communication devices in an idle state nearby:

The first short-range wireless communication device transmits a request for establishing a connection to the second short-range wireless communication device through the 60 GHz communication module and the Wi-Fi communication module;

The 60 GHz communication module of the first short-range wireless communication device is not responsive to the second short-range wireless communication device, and the Wi-Fi communication module is responsive to the second short-range wireless communication device; the first short-range wireless communication device passes the Wi- The Fi communication module sends a relay communication request, asking the surrounding device which one can act as a relay node;

Other short-range wireless communication devices that are in an idle state are responsive to a relay communication request of the first short-range wireless communication device;

Establishing transmission of the first short-range wireless communication device to the second short-range wireless communication device via the other short-range wireless communication device in the idle state.

In the short-range wireless communication device, the PHY layers of the 60 GHz communication module and the Wi-Fi communication module are independent of each other and shared by the MAC layer, and the shared MAC layer is responsible for communication and association between the 60 GHz communication module and the Wi-Fi communication module. Scheduling and control coordination. In the short-range wireless communication device, the PHY layers of the 60 GHz communication module and the Wi-Fi communication module are independent of each other, the MAC layers are independent of each other, and the RLC layer is shared, and the shared RLC layer is responsible for the 60 GHz communication module and the Wi-Fi communication module. Inter-communication, joint scheduling, and control coordination.

The short-range wireless communication device and the short-range wireless communication method according to the embodiment of the present invention, the short-range wireless communication device includes at least a 60 GHz communication module and a Wi-Fi communication module; the 60 GHz communication module and the Wi-Fi communication module work independently / or work together. Through the embodiments of the present invention, the convergence of the Wi-Fi technology and the 60 GHz technology can be realized, and the communication efficiency of the application layer can be improved, which is beneficial to the coordination of the MAC policy. DRAWINGS

1 is a schematic structural diagram of a short-range wireless communication device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another short-range wireless communication device according to an embodiment of the present invention; FIG. 3 is a schematic diagram of a scenario in which multiple devices perform relay communication according to an embodiment of the present invention. The basic idea of the embodiments of the present invention is: a short-range wireless communication device, where the short-range wireless communication device includes at least a 60 GHz communication module and a Wi-Fi communication module; wherein the 60 GHz communication module is set to perform 60 GHz Communication; the Wi-Fi communication module is configured to perform Wi-Fi communication, and the 60 GHz communication module and the Wi-Fi communication module work independently and/or cooperate.

Proximity wireless communication apparatus provided by the embodiment of the present invention supports at least 60GHz communication technologies (working band of 60GHz) and Wi-Fi communication technology (working frequency band of 2.4GHz and / or 5GHz) ₀ Note that the embodiment of the embodiment of the present invention In the short-range wireless communication device, the 60 GHz communication module and the Wi-Fi communication module generally have independent RF links and antennas, and the two modules can work independently or in cooperation.

According to the receiving/transmitting signal flow process, a communication system receiving/transmitting machine can be roughly divided into an antenna, an RF processing unit and a baseband processing unit from the bottom layer to the upper layer, wherein the baseband processing unit can be further integrated. The steps are divided into a physical layer (PHY), a medium access control (MAC) layer, a radio link control (RLC) layer, and the like. The antenna is responsible for receiving/transmitting radio signals, and the RF processing unit includes analog/digital, digital/analog conversion, demodulation/modulation, filtering, amplification processing, etc. of the analog signal; the main function of the PHY layer is to complete encoding of the baseband signal. /decoding, interleaving/deinterleaving, symbol mapping/demapping, packet packing/unpacking, checking the correctness of the physical layer receiving data, transmitting the acknowledgment signal or requesting the retransmission signal, etc.; the MAC layer implements the logical channel and the physical channel The mapping, high-level data is encapsulated into frames and error control, physical addressing and other functions; RLC layer is responsible for wireless link establishment, maintenance and other functions.

The 60 GHz communication module and the Wi-Fi communication module in the short-range wireless communication device can be fused at the MAC layer, that is, the PHY layers of the 60 GHz communication module and the Wi-Fi communication module are independent of each other and shared by the MAC layer, and the corresponding structure is as shown in FIG. The short-range wireless communication device specifically includes: RLC, MAC, Wi-Fi PHY, and 60 GHz PHY;

The 60 GHz communication module and the Wi-Fi communication module in the short-range wireless communication device can also be fused above the MAC layer, that is, the PHY layers of the 60 GHz communication module and the Wi-Fi communication module are independent of each other, the MAC layers are independent of each other, and the RLC layer is shared. Corresponding structure is shown in FIG. 2. The short-range wireless communication device specifically includes: RLC, Wi-Fi MAC, 60 GHz MAC, Wi-Fi PHY, and 60 GHz PHY.

It should be noted that the common function layer (MAC layer or RLC layer) is responsible for communication, joint scheduling, control coordination and other functions between the two modules.

Taking 2.4GHz/5GHz Wi-Fi as an example, since the frequency difference between 60GHz and 2.4GHz/5GHz is very large, and the RF processing unit and antenna have a high dependence on the operating frequency, the 60GHz communication module and 2.4GHz/5GHz Wi-Fi communication modules have their own RF links and antennas. The physical layer (PHY layer) data transmission rate of the 60 GHz communication module is much higher than the 2.4/5 GHz Wi-Fi communication module, and the 2.4/5 GHz Wi-Fi PHY layer is difficult to handle such high-speed data rate processing, so the 60 GHz communication module and Wi The -Fi communication module will have a separate PHY layer. At the MAC level, the MAC layer of the 60 GHz communication module and the MAC function of the Wi-Fi are similar in terms of functions. The two can share a single MAC layer, but the 60 GHz band has some special features, such as narrow beam, using directional antennas, etc., may need to be specially designed for the MAC layer for these characteristics, so the 60 GHz communication module and the Wi-Fi communication module may have Independent MAC layer.

In order to establish a connection between the transmitting/receiving end, the 60 GHz communication module can establish a connection through the Wi-Fi communication module. The embodiment of the present invention further provides a short-range wireless communication method, including:

The 60 GHz communication module independently transmits a connection request/response, and/or transmits a connection establishment request/response through the Wi-Fi communication module;

When using a 60 GHz communication module for high-rate data communication, such a short-range wireless communication device transmits one-hop or multi-hop relay using other short-range wireless communication devices in an idle state if the direct path cannot be reached.

The short-range wireless communication device performs one-hop or multi-hop relay transmission by using other short-range wireless communication devices in an idle state nearby, which may be:

In the scenario shown in Figure 3, the process of relaying communication between multiple devices includes:

1. Device D sends a connection request to device A through the 60 GHz communication module and the Wi-Fi communication module. Since device B and C are blocked between device D and device A, device A The 60 GHz communication module cannot receive the request, so the 60 GHz communication module of device D cannot obtain the response of device A, but the Wi-Fi communication module can get the response of device A.

2. Device D sends a relay communication request through the Wi-Fi communication module, asking which peripheral device can act as a relay node.

3. The devices B, C, and E receive the relay request. Because the device C is in the data transmission mode, it is not idle, and does not respond to the relay communication request of the device D.

4. The device E receives the relay request sent by the device D. Because it is in the idle state, the device sends a connection establishment request to the device through the 60 GHz communication module, and the 60 GHz communication module of the device A responds to the response. After the response is obtained, the device E responds to the relay communication request of device D.

5. Establish the transmission of device D to device A via device E through the control signaling from Wi-Fi.

It should be noted that, in the above-mentioned short-range wireless communication device, the PHY layers of the 60 GHz communication module and the Wi-Fi communication module are independent of each other and shared by the MAC layer, and the shared MAC layer is responsible for the communication between the 60 GHz communication module and the Wi-Fi communication module. Communication, joint scheduling and control coordination.

Alternatively, in the above-mentioned short-range wireless communication device, the PHY layers of the 60 GHz communication module and the Wi-Fi communication module are independent of each other, the MAC layers are independent of each other, and the RLC layer is shared, and the shared RLC layer is responsible for the 60 GHz communication module and the Wi-Fi communication module. Communication, joint scheduling, and control coordination.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim

A short-range wireless communication device, wherein the short-range wireless communication device comprises at least a 60 GHz communication module and a Wi-Fi communication module;

The 60 GHz communication module is configured to perform 60 GHz communication;

The Wi-Fi communication module is configured to perform Wi-Fi communication,

2. The short-range wireless communication device according to claim 1, wherein the physical PHY layers of the 60 GHz communication module and the Wi-Fi communication module are independent of each other, and the medium access control MAC layer is shared.

The shared MAC layer is configured to be responsible for communication, joint scheduling, and control coordination between the 60 GHz communication module and the Wi-Fi communication module.

3. The short-range wireless communication device according to claim 1, wherein the PHY layers of the 60 GHz communication module and the Wi-Fi communication module are independent of each other, the MAC layers are independent of each other, and the wireless link control RLC layer is shared.

A short-range wireless communication method, wherein a 60 GHz communication module of a short-range wireless communication device independently transmits a connection establishment request/response, and/or transmits a connection through a Wi-Fi communication module of the short-range wireless communication device Request/Response, this method includes:

The short-range wireless communication method according to claim 4, wherein the short-range wireless communication device performs one-hop or multi-hop relay transmission by using other short-range wireless communication devices in an idle state nearby: The first short-range wireless communication device transmits a request for establishing a connection to the second short-range wireless communication device through the 60 GHz communication module and the Wi-Fi communication module;

The short-range wireless communication method according to claim 4 or 5, wherein, in the short-range wireless communication device, a PHY layer of a 60 GHz communication module and a Wi-Fi communication module are independent of each other, and a MAC layer is shared, and the sharing is performed. The MAC layer is responsible for communication, joint scheduling, and control coordination between the 60 GHz communication module and the Wi-Fi communication module.

The short-range wireless communication method according to claim 4 or 5, wherein, in the short-range wireless communication device, the PHY layers of the 60 GHz communication module and the Wi-Fi communication module are independent of each other, the MAC layers are independent of each other, and the RLC layer Shared, the shared RLC layer is responsible for communication, joint scheduling, and control coordination between the 60 GHz communication module and the Wi-Fi communication module.