CN108551690B - Wireless device access method and device and terminal device - Google Patents
Wireless device access method and device and terminal device Download PDFInfo
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- CN108551690B CN108551690B CN201810092149.5A CN201810092149A CN108551690B CN 108551690 B CN108551690 B CN 108551690B CN 201810092149 A CN201810092149 A CN 201810092149A CN 108551690 B CN108551690 B CN 108551690B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/04—Scheduled or contention-free access
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the invention discloses a wireless equipment access method, a device and terminal equipment, wherein the method comprises the steps of determining the number of access time slots in a current wireless frame, allocating access time slots in the wireless frame according to the number of the access time slots in the wireless frame, and each access time slot corresponds to one wireless equipment to be accessed to a network; generating access characteristic indication information of each wireless device to be accessed to the network according to the access time slot allocation result; and sending the access characteristic indication information of each wireless device to be accessed to the wireless devices in the wireless system so that each wireless device to be accessed to the network performs wireless network access in the allocated access time slot according to the corresponding access characteristic indication information. The embodiment of the invention realizes the contention-free access of the wireless equipment which is not accessed to the network, and improves the network access efficiency and the time slot multiplexing efficiency of the wireless equipment.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a wireless device access method, an apparatus, and a terminal device.
Background
IEEE 802.11 Wireless Local Area Network (WLAN) has the advantages of convenient deployment, low cost and high flexibility, and is a popular wireless connection technology, the most basic network structure of WLAN is that an access point (access point) carries a plurality of wireless devices (Station, STA), and the access point provides basic access service for the wireless devices. At present, two mainstream technologies for accessing a wireless device in a WLAN are: contention access is implemented based on a carrier sense multiple access with collision avoidance (CSMA/CA) mechanism and on a Time Division Multiple Access (TDMA) mechanism.
The CSMA/CA-based competitive access idea is as follows: before a wireless device to be networked tries to send a message to an access point, whether a wireless channel is idle or not needs to be monitored in advance; if the channel is confirmed to be idle, the wireless device to be accessed to the network randomly generates a back-off time within the range of the determined back-off window; the back-off time of each wireless device to be networked is random and independent, so that the back-off time is possibly different; the method comprises the steps that a wireless device to be accessed to a network continuously monitors a channel, if the channel is idle, a backoff time value is decreased progressively after a backoff time unit, if the channel is busy, the decrease of the backoff time is suspended until the next time that the channel is idle is confirmed, and then the decrease processing is carried out; after the back-off time of the wireless equipment to be accessed to the network is reduced to 0, sending a message to an access point; if the wireless device to be accessed to the network can receive the corresponding confirmation information after sending the message, the wireless device competes for the access resource and sends the message successfully, otherwise, the wireless device to be accessed to the network conflicts when accessing, and the competition can be carried out again.
The access idea based on TDMA competition is as follows: the access point reserves a certain time slot resource for the wireless equipment to be accessed to the network in advance, the wireless equipment to be accessed to the network is informed of the reserved time slot information through broadcasting, the wireless equipment to be accessed to the network obtains the time slot resource through a random backoff competition mechanism to realize access, and the wireless equipment to be accessed to the network which cannot obtain the time slot resource can only compete again in the next period.
At present, in the prior art based on the CSMA/CA contention access idea, when a large number of wireless devices to be accessed to the network initiate access simultaneously, a large number of contention conflicts are caused, and the overall network access efficiency is reduced; in the prior art based on TDMA, a fixed access time slot is reserved for a wireless device, so that the change of the wireless device cannot be flexibly adapted, and meanwhile, the access time slot resource is in direct proportion to the scale of the wireless device, and the size of the scale of the wireless device affects the overall network performance.
Disclosure of Invention
In view of the above problems, the present invention provides a wireless device access method, apparatus and terminal device to overcome the above problems or at least partially solve the above problems, so as to implement contention-free access of a wireless device.
In one aspect of the present invention, a wireless device access method is provided, including:
determining the number of access time slots in a current wireless frame, and allocating access time slots in the wireless frame according to the number of the access time slots in the wireless frame, wherein each access time slot corresponds to a wireless device to be networked;
generating access characteristic indication information of each wireless device to be accessed to the network according to the access time slot allocation result;
and sending the access characteristic indication information of each wireless device to be accessed to the wireless devices in the wireless system so that each wireless device to be accessed to the network performs wireless network access in the allocated access time slot according to the corresponding access characteristic indication information.
Wherein the determining the number of access slots in the current radio frame comprises:
determining the proportion of all access time slots in the wireless frame according to the proportion of the wireless equipment which has accessed the network and the wireless equipment which has not accessed the network in the wireless system;
and determining the number of the access time slots in the current wireless frame according to the proportion of all the access time slots in the wireless frame.
After the access characteristic indication information of each wireless device to be networked is sent to all wireless devices in a wireless system, the method further comprises:
monitoring whether the wireless equipment to be accessed to the network is successfully accessed to the wireless network in the allocated access time slot, if so, updating the state of the wireless equipment to be accessed to the network to be the accessed state; if not, after delaying a preset number of wireless frames, allocating access time slots for the wireless equipment to be accessed to the network.
Wherein the method further comprises:
and monitoring whether the accessed wireless equipment keeps uplink synchronization, and if not, updating the state of the accessed wireless equipment which does not keep uplink synchronization to the state of non-access to the network.
Before the allocating each access time slot to the wireless device to be networked in the wireless system, the method further comprises:
Selecting the wireless devices to be accessed to the network with the same number as the number of the access time slots from the list of the wireless devices to be accessed to the network in a polling mode, or
And selecting the wireless devices to be networked, the number of which is the same as that of the access time slots, according to the priority of the wireless devices which are not networked from high to low.
Wherein, the sending the access characteristic indication information of each wireless device to be networked to all wireless devices in the wireless system includes:
and sending the access characteristic indication information of each wireless device to be networked to all wireless devices in the wireless system through the broadcast time slot in the wireless frame.
Wherein the method further comprises:
and adjusting the length of the broadcast time slot in the radio frame according to the size of the access characteristic indication information.
In another aspect of the present invention, a wireless device access method is provided, including:
monitoring access characteristic indication information of each wireless device to be networked sent by an access point, wherein the access characteristic indication information is generated according to an access time slot allocation result when the access point allocates access time slots for the wireless devices to be networked in a wireless system;
identifying access characteristic indication information corresponding to the current wireless equipment from the received access characteristic indication information of each wireless equipment to be accessed to the network;
And accessing the wireless network in the allocated access time slot according to the corresponding access characteristic indication information.
Wherein the access feature indication information includes: wireless device identity, radio frame indication, access slot, or index within the radio frame where the access symbol is located.
The identifying, from the received access characteristic indication information of each wireless device to be networked, access characteristic indication information corresponding to a current wireless device includes:
and matching the wireless equipment identity in the received access characteristic indication information of each wireless equipment to be accessed to the network according to the identity of the current wireless equipment, and if the matching is successful, taking the access characteristic indication information corresponding to the matched wireless equipment identity as the access characteristic indication information corresponding to the current wireless equipment.
Wherein the method further comprises:
and if the matching fails, the current wireless equipment continues to monitor the access characteristic indication information sent by the access point.
In another aspect of the present invention, a wireless device access apparatus is provided, including:
the device comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining the number of access time slots in a current wireless frame, and allocating the access time slots in the wireless frame according to the number of the access time slots in the wireless frame, and each access time slot corresponds to a wireless device to be networked;
The distribution module is used for generating access characteristic indication information of each wireless device to be accessed to the network according to the access time slot distribution result;
and the sending module is used for sending the access characteristic indication information of each wireless device to be accessed to the wireless devices in the wireless system so that each wireless device to be accessed to the network can access the wireless network in the allocated access time slot according to the corresponding access characteristic indication information.
Wherein, the determining module comprises a proportion confirming submodule and a quantity confirming submodule:
the proportion confirming sub-module is used for confirming the proportion of all access time slots in the wireless frame according to the proportion of the wireless equipment which has accessed the network and the wireless equipment which has not accessed the network in the wireless system;
and the quantity confirming submodule is used for confirming the quantity of the access time slots in the current wireless frame according to the proportion of all the access time slots in the wireless frame.
In another aspect of the present invention, there is provided a terminal device, including:
the monitoring module is used for monitoring access characteristic indicating information of each wireless device to be networked sent by an access point, wherein the access characteristic indicating information is generated according to an access time slot allocation result when the access point allocates an access time slot for the wireless device to be networked in the wireless system;
The identification module is used for identifying the access characteristic indication information corresponding to the current wireless equipment from the received access characteristic indication information of each wireless equipment to be accessed to the network;
an access module for accessing the wireless network at the allocated access time slot according to the corresponding access characteristic indication information
The technical scheme provided in the embodiment of the application has the following technical effects or advantages:
according to the wireless device access method, the wireless device access device and the terminal device, the number of the access time slots in the wireless frame is adjusted on the access point side, and the access characteristic indication information is generated to enable the wireless device which does not access to the network to obtain the access time slots, so that the wireless device which does not access to the network is free from competition access, and the network access efficiency and the time slot multiplexing efficiency of the wireless device are improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
Fig. 1 is a schematic topology diagram of a radio access system according to an embodiment of the present invention;
fig. 2 is a flowchart of a wireless device access method according to an embodiment of the present invention;
fig. 3 is a flowchart of a wireless device access method according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a radio frame according to an embodiment of the present invention;
fig. 5 is a block diagram of a wireless device access apparatus according to an embodiment of the present invention;
fig. 6 is a block diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The embodiment of the invention is based on the TDMA technology, an access point dynamically plans the number of access time slots in a wireless frame according to the number of access wireless equipment in the wireless system, generates access characteristic indication information and informs the access wireless equipment of each access network through broadcasting, and the access wireless equipment initiates access on the appointed access time slot of the appointed wireless frame, thereby finally realizing the contention-free access of all the access wireless equipment in the wireless system; meanwhile, the access point periodically monitors the service state of each network access wireless device in the system, and redistributes the access characteristic indication information for the desynchronized network access wireless devices to realize the resynchronization of the network access wireless devices.
A wireless access system topology is shown in fig. 1. The wireless access system includes an Access Point (AP) and a number of wireless devices (STAs).
Fig. 2 is a flow chart schematically illustrating a wireless device access method according to an embodiment of the present invention. The method is configured at the access point side and executed by the access point. Referring to fig. 2, a wireless device access method provided in an embodiment of the present invention specifically includes the following steps:
s201, determining the number of access time slots in a current wireless frame, and allocating access time slots in the wireless frame according to the number of the access time slots in the wireless frame, wherein each access time slot corresponds to a wireless device to be networked.
The access time slot is composed of a plurality of symbols which are specially used for accessing the network access wireless equipment in a wireless frame, and the number of the symbols in the wireless frame can be fixed or variable.
In this embodiment of the present invention, the determining the number of access slots in the current radio frame includes:
determining the proportion of all access time slots in the wireless frame according to the proportion of the wireless devices which are accessed to the network and the wireless devices which are not accessed to the network in the wireless system; and determining the number of the access time slots in the current wireless frame according to the proportion of all the access time slots in the wireless frame.
Before the access point opens the station in the embodiment of the present invention, the total number T of the wireless devices that the access point needs to provide for accessing the network is known, and assuming that the number of the wireless devices accessing the network is currently a, the number of the wireless devices accessing the network is not T-a. And the total number T of the service network access wireless devices is obtained by external configuration.
The accessed wireless equipment refers to wireless equipment which is in a state that an access point allocates an access time slot for the accessed wireless equipment under the service of the access point, the accessed wireless equipment initiates access on the appointed access time slot, and the accessed wireless equipment and the access point keep uplink synchronization after the access is successful.
The wireless devices which are not accessed to the network comprise wireless devices which are accessed to the network and do not initiate access, access failure of the wireless devices which are accessed to the network, or wireless devices which are accessed to the network but lose synchronization with the access point due to some reason. In the embodiment of the invention, the access point equipment dynamically adjusts the proportion of the service time slot and the access time slot in one wireless frame according to the proportion of the wireless equipment which is currently accessed to the network and is not accessed to the network by means of a dynamic programming algorithm, thereby realizing the aim of maximizing the time slot resource reuse. The time slot resource multiplexing means that the total number of time slots in a radio frame is fixed, if the access time slot ratio is more, the service time slot ratio is relatively lower, and the service time slot and the access time slot can be mutually converted; for example, at the beginning of the station opening of the access point, less accessed network access wireless devices are available, more access time slots can be allocated, more to-be-accessed network wireless devices can complete access more quickly, when the ratio of the access time slots to the to-be-accessed network wireless devices reaches a certain ratio, the proportion of the access time slots is reduced, the accessed network access wireless devices can achieve ideal throughput, and the utilization rate of system time slot resources can be reasonably improved through the dynamic adjustment mode.
And S202, generating access characteristic indication information of each wireless device to be accessed to the network according to the access time slot allocation result.
In the embodiment of the present invention, the access characteristic information includes a unique identity of the network access wireless device in the access point network, a wireless frame indication, an access time slot, or an index of an access symbol in a wireless frame.
And S203, sending the access characteristic indication information of each wireless device to be accessed to all wireless devices in the wireless system, so that each wireless device to be accessed to the network performs wireless network access in the allocated access time slot according to the corresponding access characteristic indication information.
The access characteristic indication information is sent by broadcasting, and the length of the broadcast time slot in the current radio frame can be adjusted according to the size of the access characteristic indication information, namely, when the broadcast bearing information is more, the length of the broadcast time slot is increased, otherwise, the length of the broadcast time slot is decreased.
In the embodiment of the invention, the access process is that the wireless equipment which does not access to the network monitors the broadcast, utilizes the identity identification of the wireless equipment to search whether the broadcast contains the access characteristic information belonging to the wireless equipment, and if the search is successful, the wireless equipment which does not access to the network initiates access on the access time slot appointed by the access point to carry out uplink synchronization; if the search fails, the wireless device which does not access the network does not trigger the access process, and continues to monitor the broadcast.
According to the wireless device access method provided by the embodiment of the invention, the access time slot number in the wireless frame is adjusted at the access point side, and the access characteristic indication information is generated to allow the wireless device which does not access to the network to obtain the access time slot, so that the contention-free access of the wireless device which does not access to the network is realized, and the network access efficiency and the time slot multiplexing efficiency of the wireless device are improved.
In another embodiment of the present invention, after sending the access characteristic indication information of each wireless device to be networked to all wireless devices in the wireless system, the access point monitors whether the wireless device to be networked successfully accesses the wireless network in the allocated access time slot, and if so, updates the state of the wireless device to be networked to the state of being networked; if not, delaying a preset number of wireless frames and then allocating access time slots for the wireless equipment to be accessed to the network.
Further, the method further comprises: the access point monitors whether the accessed wireless equipment keeps uplink synchronization, if not, the state of the accessed wireless equipment which does not keep uplink synchronization is updated to the state of non-access, and the access time slot is allocated to the wireless equipment again. The monitoring is performed periodically, and the monitoring period may be a single radio frame or several radio frames. Specifically, the monitoring and updating of the state of the wireless device to be networked includes two types, the first type is that an access point detects whether a corresponding wireless device to be networked initiates an access request on an access time slot allocated to the wireless device to be networked in advance, and enters an uplink synchronization state, and if the detection is successful, the wireless device to be networked is updated to be in a network-accessed state after the verification is successful; if the detection fails, backing a plurality of wireless frames and allocating access time slots for the wireless frames again; the second type is that the access point monitors the service state of the wireless equipment which has accessed the network, if the wireless equipment which has accessed the network is detected to be out of synchronization with the access point, the state of the wireless equipment is updated to be the state of not accessing the network, meanwhile, the wireless equipment is placed in a list which is not accessed to be used as the wireless equipment which has not accessed the network, and the access time slot is distributed to the wireless equipment again to realize resynchronization.
It should be noted that the method for detecting step loss and synchronization in this embodiment is implemented based on the prior art, and this embodiment is not limited in particular.
In this embodiment of the present invention, before the allocating access slots in the radio frame according to the number of access slots in the radio frame, the method further includes:
and selecting a specified number of wireless devices to be networked from the list of wireless devices to be unconnected by adopting a polling mode, or selecting the specified number of wireless devices to be connected according to the priority of the wireless devices to be unconnected from high to low.
Specifically, the method for allocating access time slots is that the access point allocates Z access time slots in one wireless frame to Z wireless devices to be networked one by one. The method for selecting the Z wireless devices to be accessed to the network can directly select the Z wireless devices to be accessed to the network from the inaccessible list in a polling mode, or can give priority to the wireless devices to be accessed to the network first, then sort the inaccessible list according to the priority, and finally select the Z wireless devices to be accessed to the network with the highest priority.
According to the wireless device access method provided by the embodiment of the invention, the access characteristic indication information is generated by dynamically planning the number of the access time slots in the wireless frame through the access point according to the number of the wireless devices which are accessed to the network in the wireless system for use when the wireless devices which are not accessed to the network are accessed, so that the competition-free access of the wireless devices which are not accessed to the network is realized, the network access efficiency and the time slot multiplexing efficiency of the wireless devices are improved, the wireless devices which are accessed to the network and are out of synchronization can be timely found through periodically monitoring the network access state, and the operation efficiency is improved.
Fig. 3 schematically shows a flow chart of a wireless device access method according to another embodiment of the present invention. The method is configured at the terminal equipment side and executed by the terminal equipment. Referring to fig. 3, a wireless device access method provided in an embodiment of the present invention specifically includes the following steps:
s301, monitoring access characteristic indication information of each wireless device to be networked sent by an access point, wherein the access characteristic indication information is generated according to an access time slot allocation result when the access point allocates an access time slot for the wireless device to be networked in a wireless system;
wherein the access characteristic indication information includes: wireless device identity, radio frame indication, access slot, or index within the radio frame where the access symbol is located.
S302, identifying access characteristic indication information corresponding to the current wireless equipment from the received access characteristic indication information of each wireless equipment to be accessed to the network.
The specific implementation process of the step is as follows: matching the received wireless equipment identity marks in the access characteristic indication information of the wireless equipment to be accessed into the network according to the identity marks of the current wireless equipment; if the matching is successful, the access characteristic indication information corresponding to the matched wireless equipment identity is used as the access characteristic indication information corresponding to the current wireless equipment; if the matching fails, the current wireless equipment continues to monitor the access characteristic indication information sent by the access point.
And S303, accessing the wireless network in the allocated access time slot according to the corresponding access characteristic indication information.
According to the wireless device access method provided by the embodiment of the invention, the number of the access time slots in the wireless frame is adjusted at the access point side, the access characteristic indication information is generated, and the wireless device which does not access the network acquires the access time slots to access the access point, so that the competition-free access of the wireless device which does not access the network is realized, and the network access efficiency and the time slot multiplexing efficiency of the wireless device are improved.
The following describes a specific implementation of a wireless device access method with specific embodiments:
fig. 4 is a schematic structural diagram of a radio frame according to an embodiment of the present invention, where the frame structure includes a broadcast timeslot, a service timeslot, and an access timeslot, where the number M of the access timeslots is variable.
After the wireless system is deployed, configuring the total quantity T of the wireless devices to be served by the access point, and respectively completing power-on and power-off of the access point and each wireless device; after the access point is electrified and opened, the number of the wireless devices which have accessed the network and the wireless devices to be accessed to the network is counted by taking the wireless frame as a period, and the number of the access time slots contained in the current wireless frame is determined according to the proportion of the wireless devices which have accessed the network and are to be accessed to the network. Assuming that the total number of the service network access wireless devices supported by the access point is T, the maximum number of the allocable access slots in each wireless frame is N, and the number of the network access wireless devices is a, the number of the network access wireless devices which are not accessed is T-a, assuming that the weight of the access slots in each wireless frame is (T-a)/T, and the number of the access slots in each wireless frame is M (T-a, W, N), it can be seen that as the number of the network access wireless devices increases, the number of the access slots in each wireless frame decreases until all the network access wireless devices are accessed, the number of the access slots in one wireless frame decreases to 0, and all the slot resources in the wireless frame are used for data service transmission, thereby improving the throughput rate of the system.
Through the above calculation, the xth radio frame includes M access slots, as shown in fig. 4. Firstly, the access point selects M wireless devices to be accessed into the network from an unaccessed list as one-to-one access time slot of the M wireless devices to be accessed into the network, and generates access characteristic information of each wireless device to be accessed into the network; if the radio frame number is X, the starting position of the access slot in the radio frame is AcStartIdx, the length of each access slot is L, and the identities of the wireless devices to be networked are denoted as StaId1, StaId2, …, and StaIdM, then the access characteristic information of M wireless devices to be networked in the radio frame X may be denoted as { (StaId1, X, AcStartIdx), (StaId2, X, AcStartIdx + L), …, (StaId1, X, AcStartIdx + (M-1) × L)) }. Second, the access point encapsulates the generated access characteristic information in a broadcast, which is transmitted to all wireless devices in the system through the broadcast slots shown in fig. 4.
The wireless equipment which does not access to the network continuously monitors and receives the broadcast, utilizes the self StaId to search whether the broadcast contains the self access characteristic information, and if the search is unsuccessful, the wireless equipment which does not access to the network continuously repeats the action; if the search is successful, if a certain wireless device to be accessed to the network receives the receiving characteristic information (Staidn, X, AcStartIdx + n L), n- (0, M-1), the wireless device to be accessed to the network initiates access on the AcStartIdx + n L of the wireless frame X; by the method, the access time slots of each wireless device which is not accessed to the network in the system are staggered, so that the wireless devices accessed to the network can realize contention-free access, and the resource waste caused by contention collision is effectively avoided.
Finally, the access point detects whether the wireless equipment to be accessed is accessed on AcStartIdx + n × L of the wireless frame X, if the access is detected successfully, the wireless equipment to be accessed and the access point finish uplink synchronization through subsequent series of interactions, the access point updates the access state of the wireless equipment to be accessed, and data interaction is continued; if the access is detected to fail, the access point backs off Y wireless frames and reallocates access time slots for the wireless frames; meanwhile, the access point also needs to periodically monitor the service state of the network-accessing wireless equipment which has accessed the network, and if the network-accessing wireless equipment is detected to be out of synchronization, the access time slot needs to be allocated again to the network-accessing wireless equipment so that the network-accessing wireless equipment can be accessed again, and the access point can realize resynchronization.
For simplicity of explanation, the method embodiments are described as a series of acts or combinations, but those skilled in the art will appreciate that the embodiments are not limited by the order of acts described, as some steps may occur in other orders or concurrently with other steps in accordance with the embodiments of the invention. Further, those of skill in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the embodiments of the invention.
Fig. 5 is a block diagram schematically illustrating a structure of a wireless device access apparatus according to an embodiment of the present invention. Referring to fig. 5, the wireless device access apparatus in the embodiment of the present invention specifically includes a determining module 401, an allocating module 402, and a sending module 403, where:
a determining module 401, configured to determine the number of access slots in a current wireless frame, and allocate access slots in the wireless frame according to the number of access slots in the wireless frame, where each access slot corresponds to a wireless device to be networked;
the determining module specifically comprises a proportion confirming submodule and a quantity confirming submodule:
the proportion confirms the submodule, is used for according to the proportion of having already inserted the network wireless device and not inserting the network wireless device in the wireless system, confirm the proportion that the access time slot takes up in the said radio frame;
and the quantity confirming submodule is used for confirming the quantity of the access time slots in the current wireless frame according to the proportion of the access time slots in the wireless frame.
An allocating module 402, configured to generate access characteristic indication information of each wireless device to be networked according to an access time slot allocation result;
a sending module 403, configured to send the access characteristic indication information of each wireless device to be networked to all wireless devices in the wireless system, so that each wireless device to be networked performs wireless network access in the allocated access time slot according to the corresponding access characteristic indication information.
The access characteristic indication information is sent by broadcasting, the length of a broadcast time slot in a radio frame where the broadcasting is located can be adjusted according to the size of the access characteristic indication information, when the broadcast bearing information is more, the length of the broadcast time slot is increased, and when the broadcast bearing information is less, the length of the broadcast time slot is reduced.
In an embodiment of the present invention, the apparatus further includes: the monitoring module is used for monitoring whether the wireless equipment to be accessed to the network is successfully accessed to the wireless network in the allocated access time slot after the access characteristic indication information of the wireless equipment to be accessed to the network is sent to all the wireless equipment in the wireless system, and if so, updating the state of the wireless equipment to be accessed to the network to be the accessed state; if not, delaying a preset number of wireless frames and then allocating access time slots for the wireless equipment to be accessed to the network.
The monitoring module is further configured to monitor whether the wireless device already connected to the network maintains uplink synchronization, if not, update the state of the wireless device already connected to the network that does not maintain uplink synchronization to a state that does not already connect to the network, and reallocate access time slots for the wireless device, where the monitoring is performed periodically.
The device further comprises a selecting module, configured to select, in a polling manner, a specified number of wireless devices to be networked from a list of wireless devices to be networked before allocating access slots in the wireless frame according to the number of access slots in the wireless frame, or select, in order from high to low, the specified number of wireless devices to be networked according to priorities of the wireless devices to be networked.
The wireless device access device provided by the embodiment of the invention realizes the contention-free access of the wireless device without network access by adjusting the number of the access time slots in the wireless frame at the access point side and generating the access characteristic indication information for the wireless device without network access to acquire the access time slots, thereby improving the network access efficiency and the time slot multiplexing efficiency of the wireless device
Fig. 6 schematically shows a block diagram of a terminal device according to an embodiment of the present invention. Referring to fig. 6, the terminal device in the embodiment of the present invention specifically includes a monitoring module 501, an identification module 502, and an access module 503, where:
the monitoring module 501 is configured to monitor access characteristic indication information of each wireless device to be networked sent by an access point, where the access characteristic indication information is generated according to an access time slot allocation result when the access point allocates an access time slot for the wireless device to be networked in the wireless system.
Wherein the access characteristic indication information includes: wireless device identity, radio frame indication, access slot, or index within the radio frame where the access symbol is located.
The identifying module 502 is configured to identify access characteristic indicating information corresponding to a current wireless device from the received access characteristic indicating information of each wireless device to be networked.
The identifying module 502 is specifically configured to match, according to the identity of the current wireless device, the wireless device identity in the received access characteristic indicating information of each wireless device to be networked, and if the matching is successful, use the access characteristic indicating information corresponding to the matched wireless device identity as the access characteristic indicating information corresponding to the current wireless device. If the matching fails, the current wireless equipment continues to monitor the access characteristic indication information sent by the access point.
An access module 503, configured to perform access to the wireless network in the allocated access time slot according to the corresponding access characteristic indication information.
According to the terminal equipment provided by the embodiment of the invention, the number of the access time slots in the wireless frame is adjusted at the access point side, the access characteristic indication information is generated, and the wireless equipment which does not access the network acquires the access time slots to access the access point, so that the competition-free access of the wireless equipment which does not access the network is realized, and the network access efficiency and the time slot multiplexing efficiency of the wireless equipment are improved.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (12)
1. A wireless device access method, the method comprising:
determining the proportion of all access time slots in a wireless frame according to the proportion of wireless equipment which has accessed the network and wireless equipment which has not accessed the network in the wireless system; determining the number of the access time slots in the current wireless frame according to the proportion of all the access time slots in the wireless frame;
allocating access time slots in the wireless frame according to the number of the access time slots in the wireless frame, wherein each access time slot corresponds to a wireless device to be networked;
the current access equipment dynamically adjusts the proportion of the service time slot and the access time slot in one wireless frame according to the proportion of the wireless equipment which is currently accessed to the network and is not accessed to the network by means of a dynamic programming algorithm;
generating access characteristic indication information of each wireless device to be accessed to the network according to the access time slot allocation result;
and sending the access characteristic indication information of each wireless device to be accessed to the wireless devices in the wireless system so that each wireless device to be accessed to the network performs wireless network access in the allocated access time slot according to the corresponding access characteristic indication information.
2. The method of claim 1, wherein after sending the access characteristic indication information of each wireless device to be networked to all wireless devices in the wireless system, the method further comprises:
Monitoring whether the wireless equipment to be accessed to the network is successfully accessed to the wireless network in the allocated access time slot, if so, updating the state of the wireless equipment to be accessed to the network to be the accessed state; if not, delaying a preset number of wireless frames and then allocating access time slots for the wireless equipment to be accessed to the network.
3. The method of claim 2, further comprising:
and monitoring whether the accessed wireless equipment keeps uplink synchronization, and if not, updating the state of the accessed wireless equipment which does not keep uplink synchronization to the state of non-access to the network.
4. The method of claim 1, wherein prior to said allocating access slots within the radio frame according to the number of access slots in the radio frame, the method further comprises:
selecting the wireless devices to be accessed to the network with the same number as the number of the access time slots from the list of the wireless devices to be accessed to the network in a polling mode, or
And selecting the wireless devices to be networked, the number of which is the same as that of the access time slots, according to the priority of the wireless devices which are not networked from high to low.
5. The method of claim 1, wherein the sending the access characteristic indication information of each wireless device to be networked to all wireless devices in a wireless system comprises:
And sending the access characteristic indication information of each wireless device to be networked to all wireless devices in the wireless system through the broadcast time slot in the wireless frame.
6. The method of claim 1, further comprising:
and adjusting the length of the broadcast time slot in the radio frame according to the size of the access characteristic indication information.
7. A wireless device access method, the method comprising:
monitoring access characteristic indicating information of each wireless device to be networked sent by an access point, wherein the access characteristic indicating information is generated according to an access time slot allocation result when the access point allocates an access time slot for the wireless device to be networked in a wireless system, and the access point dynamically adjusts the proportion of a service time slot and the access time slot in a wireless frame according to the proportion of the wireless devices which are currently networked and not networked by means of a dynamic programming algorithm;
identifying access characteristic indication information corresponding to the current wireless equipment from the received access characteristic indication information of each wireless equipment to be accessed to the network;
and accessing the wireless network in the allocated access time slot according to the corresponding access characteristic indication information.
8. The method of claim 7, wherein the access characteristic indication information comprises: the wireless device identity, the wireless frame indication, the access time slot or the index of the access symbol in the wireless frame.
9. The method of claim 8, wherein the identifying, from the received access characteristic indication information of each wireless device to be networked, the access characteristic indication information corresponding to the current wireless device comprises:
and matching the wireless equipment identity in the received access characteristic indication information of each wireless equipment to be accessed to the network according to the identity of the current wireless equipment, and if the matching is successful, taking the access characteristic indication information corresponding to the matched wireless equipment identity as the access characteristic indication information corresponding to the current wireless equipment.
10. The method of claim 9, further comprising:
and if the matching fails, the current wireless equipment continues to monitor the access characteristic indication information sent by the access point.
11. An apparatus for wireless device access, the apparatus comprising:
the device comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining the number of access time slots in a current wireless frame, and allocating the access time slots in the wireless frame according to the number of the access time slots in the wireless frame, and each access time slot corresponds to a wireless device to be networked;
The determining module comprises a proportion confirming submodule and a quantity confirming submodule: the proportion confirming sub-module is used for confirming the proportion of all access time slots in the wireless frame according to the proportion of the wireless equipment which has accessed the network and the wireless equipment which has not accessed the network in the wireless system; the quantity confirming submodule is used for confirming the quantity of the access time slots in the current wireless frame according to the proportion of all the access time slots in the wireless frame;
the current access equipment dynamically adjusts the proportion of the service time slot and the access time slot in a wireless frame according to the proportion of the wireless equipment which is currently accessed to the network and is not accessed to the network by means of a dynamic programming algorithm;
the distribution module is used for generating access characteristic indication information of each wireless device to be accessed to the network according to the access time slot distribution result;
and the sending module is used for sending the access characteristic indication information of each wireless device to be accessed to the wireless devices in the wireless system so that each wireless device to be accessed to the network can access the wireless network in the allocated access time slot according to the corresponding access characteristic indication information.
12. A terminal device, characterized in that the terminal device comprises:
The monitoring module is used for monitoring access characteristic indicating information of each wireless device to be networked sent by an access point, wherein the access characteristic indicating information is generated according to an access time slot allocation result when the access point allocates an access time slot for the wireless device to be networked in a wireless system, and the access point dynamically adjusts the proportion of a service time slot and the access time slot in one wireless frame according to the proportion of the wireless devices which are currently networked and not networked by means of a dynamic programming algorithm;
the identification module is used for identifying the access characteristic indication information corresponding to the current wireless equipment from the received access characteristic indication information of each wireless equipment to be accessed to the network;
and the access module is used for accessing the wireless network in the allocated access time slot according to the corresponding access characteristic indication information.
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