CN104994592B

CN104994592B - Multiple access method, Apparatus and system

Info

Publication number: CN104994592B
Application number: CN201510242596.0A
Authority: CN
Inventors: 梁海祥; 潘稻; 张晓风; 孙方林; 赵泉波
Original assignee: Huawei Technologies Co Ltd
Priority date: 2012-06-06
Filing date: 2012-06-06
Publication date: 2016-09-07
Anticipated expiration: 2032-06-06
Also published as: CN104994592A

Abstract

The embodiment of the present invention provides a kind of multiple access method, Apparatus and system.The method includes: the network equipment receives packet, and described packet includes the identification information of terminal；Identification information according to described terminal, inquiry terminal identification information and the mapping table of broadcast channel, determine the broadcast channel corresponding with the identification information of described terminal, described one of them broadcast channel that broadcast channel is default multiple broadcast channels determined, described terminal is any one terminal in the set of terminal corresponding with the described broadcast channel determined；Identification information according to described terminal, by the described broadcast channel determined, described packet is sent to described terminal, so that described terminal utilizes the modulation parameter of the described broadcast channel determined, demodulating described packet, raising resource utilization is relatively low and decreases signaling consumption.

Description

Multiple access method, Apparatus and system

Technical field

The present invention relates to the communication technology, particularly relate to a kind of multiple access method, Apparatus and system.

Background technology

In a communication network, multiple access accesses (multiple access) and refers to that multiple terminal is connected to identical transmission medium, Such as, it is wirelessly transferred the free space utilizing electromagnetic communication, point-to-multipoint coaxial cable (Coaxial Cable) network, Data stream or signal from multiple terminals is allowed to share identical transmission medium.

Existing wireless and wired communication system, multiple access technique mainly includes time division multiple acess (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), code division Multiple access (Code Division Multiple Access, CDMA) and OFDM (Orthogonal Frequency- Division Multiple Access, OFDMA) etc..Multiple access technique mainly by time domain, frequency domain or exists simultaneously Physical resource dividing is become several Resource Block, the network equipment to enter each terminal based on the Resource Block divided with frequency domain by time domain Row resource is distributed, and by the form of signaling, resource allocation information is sent to terminal, adds signaling consumption.

Additionally there is also a kind of multi-access mode at existing wired communication system, be that all physical resources are wide as one Broadcast passage, use identical modulation system and modulation parameter (such as order of modulation, order of modulation such as binary system for all of terminal Phase-shift keying (PSK) (Binary Phase Shift Keying, BPSK), QPSK (Quadrature Phase Shift Keying, QPSK), 8QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation), 16QAM, 32QAM, 64QAM, 256QAM etc.), terminal demodulates after Bit data on upper strata (such as media access control layer (Media Access Control, MAC)) in obtain and belong to the Frame of described terminal, such as, based on coaxial cable (Coaxial Cable) have Data-over-cable business interface specification (Data Over Cable Service on line TV network (Cable TV, CATV) Interface Specifications, DOCSIS) or ether passive optical-fiber network based on passive optical-fiber network (EPON, Ethernet Passive Optical Network), but, based on all physical resources as a broadcast channel, for All of terminal uses identical modulation system and the multiple access method of modulation parameter so that system must use minimum tune Parameter processed, reduces resource utilization.

Therefore, there is the problem that resource utilization is relatively low and increases signaling consumption in prior art.

Summary of the invention

The embodiment of the present invention provides multiple access method, Apparatus and system, in order to improve resource utilization and to reduce letter Make expense.

On the one hand a kind of multiple access method is provided, including:

The network equipment receives packet, and described packet includes the identification information of terminal；

According to the identification information of described terminal, the mapping table of inquiry terminal identification information and broadcast channel, determine with The broadcast channel that the identification information of described terminal is corresponding, the described broadcast channel that determines be default multiple broadcast channels wherein One broadcast channel, described terminal is any one terminal in the set of terminal corresponding with the described broadcast channel determined；

According to the identification information of described terminal, by the described broadcast channel determined, described packet is sent to described Terminal, so that described terminal utilizes the modulation parameter of the described broadcast channel determined, demodulates described packet.

On the other hand a kind of multiple access method is provided, including:

Terminal receives the packet that the network equipment is sent by broadcast channel, comprises the mark letter of terminal in described packet Breath, described broadcast channel is that the described network equipment is protected in the mapping table of broadcast channel according to the identification information of described terminal The identification information of the described terminal deposited and the corresponding relation of broadcast channel, corresponding wide of the identification information with described terminal that determines Broadcasting passage, described one of them broadcast channel that broadcast channel is default multiple broadcast channels determined, described terminal is institute State any one terminal in the set of terminal that the broadcast channel determined is corresponding；

Described terminal utilizes the modulation parameter of described broadcast channel, demodulates the data of described broadcast channel.

On the other hand a kind of network equipment is provided, including:

First receiver module, is used for receiving packet, and described packet includes the identification information of terminal；

First determines module, for the identification information according to described terminal, inquiry terminal identification information and broadcast channel Mapping table, determines the broadcast channel corresponding with the identification information of described terminal, and the described broadcast channel determined is default One of them broadcast channel of multiple broadcast channels, described terminal is in the set of terminal that the described broadcast channel determined is corresponding Any one terminal；

First sending module, for the identification information according to described terminal, by the described broadcast channel determined, by described Packet is sent to described terminal, so that described terminal utilizes the modulation parameter of the described broadcast channel determined, demodulation is described Packet.

On the other hand a kind of terminal is provided, including:

Second receiver module, for receiving the packet that the network equipment is sent by broadcast channel, wraps in described packet Identification information containing terminal, described broadcast channel is that the described network equipment is corresponding with broadcast channel according to the identification information of terminal The corresponding relation of identification information and the broadcast channel of the described terminal preserved in relation table, that determine believes with described terminal mark The broadcast channel that breath is corresponding, described one of them broadcast channel that broadcast channel is default multiple broadcast channels determined, institute Stating terminal is any one terminal in the set of terminal that the described broadcast channel determined is corresponding；

Demodulation module, for utilizing the modulation parameter of described broadcast channel, demodulates described packet.

On the other hand a kind of multiple access system is provided, including above-mentioned terminal and the above-mentioned network equipment.

As shown from the above technical solution, the network equipment of the embodiment of the present invention is according to the terminal comprised in the packet received Identification information, determine the broadcast channel corresponding with the identification information of this terminal, and packet sent by this broadcast channel To terminal, solve the problem that in prior art, physical resource service efficiency is relatively low, it is possible to increase physical resource service efficiency, subtract The expense of few signaling.

Accompanying drawing explanation

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is this Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to Other accompanying drawing is obtained according to these accompanying drawings.

The schematic flow sheet of the multiple access method that Fig. 1 provides for one embodiment of the invention；

Fig. 2 is the schematic diagram that the present embodiment divides broadcast channel on frequency domain continuously；

Fig. 3 is the present embodiment schematic diagram of discrete division broadcast channel on frequency domain；

Fig. 4 is the schematic diagram that the present embodiment divides broadcast channel in time domain；

Fig. 5 is that the present embodiment dynamically divides the schematic diagram of broadcast channel according to the characteristic information of terminal；

Fig. 6 is the schematic diagram of multiple OFDM passages of the present embodiment application；

The schematic flow sheet of the multiple access method that Fig. 7 provides for another embodiment of the present invention；

The structural representation of the network equipment that Fig. 8 provides for another embodiment of the present invention；

The structural representation of the terminal that Fig. 9 provides for another embodiment of the present invention.

Detailed description of the invention

For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is The a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art The every other embodiment obtained under not making creative work premise, broadly falls into the scope of protection of the invention.

Existing wireless communication system, multiple access technique commonly used time division multiple acess access technology, CDMA access Technology or orthogonal frequency-time multiple access technology, wherein, time division multiple acess access technology, in temporal partitioning resource, is divided for each terminal Join some OFDMs (Orthogonal Frequency Division Multiplexing, OFDM) symbol or orthogonal Amplitude modulation(PAM) (Quadrature Amplitude Modulation, QAM) symbol；And CDMA access technology is based on spread spectrum (Spread Spectrum) technology, is that user distributes physical resource based on code；And orthogonal frequency-time multiple access technology is passed through simultaneously Resource is divided by time domain and frequency domain, has various embodiment in prior art, such as Long Term Evolution (Long Term Evolution, is called for short LTE) resource is simultaneously divided into some Resource Block (Resource from time domain and frequency domain by system Block), physical resource is distributed for each terminal based on the Resource Block divided.

Existing wired communication system, such as, cable TV network based on coaxial cable (Coaxial Cable) (CATV, Cable TV) or based on passive optical-fiber network (PON, Passive Optical Network) point-to-multipoint Cable network, multiple access technique mainly using all physical resources as a broadcast channel (as QAM modulation or OFDM modulate Under mode, carrier wave all uses identical modulation parameter for different terminals), the data stream of all terminals or signal all share one Individual broadcast channel.

It can be seen that inventor thinks at least exists such as in prior art from technical scheme disclosed in above-mentioned prior art Lower problem:

On the one hand, physical resource dividing is become by prior art some Resource Block (from time domain, frequency domain or simultaneously in time domain And frequency domain divides), the data bit that ready-portioned Resource Block can carry is relatively-stationary value, and the network equipment or terminal need Transmission data length size indefinite, therefore, the data of transmission cannot fully utilized distributed Resource Block, cause extra The wasting of resources.

On the other hand, the network equipment carries out resource distribution based on the Resource Block divided to terminal, needs continually by resource Distribution information is sent to terminal by the form of signaling, adds signaling consumption.

On the other hand, based on all physical resources as a broadcast channel, identical tune is used for all of terminal Mode processed and the multiple access method of modulation parameter so that system must use minimum modulation parameter, reduce resource and use Efficiency.

In view of the problem in the presence of above-mentioned prior art, the embodiment of the present invention provides following technical scheme, Ke Yiti High resource utilization and minimizing signaling consumption.

Technical scheme, can apply to various wired communication system, such as, based on coaxial cable (Coaxial Cable) cable TV network (CATV, Cable TV) or based on passive optical-fiber network (PON, Passive Optical Network) point-to-multipoint cable network, it is also possible to be applied to wireless communication system, such as: Long Term Evolution (Long Term Evolution, is called for short LTE) system or World Interoperability for Microwave Access, WiMax (World Interoperability for Microwave Access, is called for short WiMAX) system etc..

Technical scheme, can apply to the various network equipment and terminal, can be the head end in wired system Base station in equipment or wireless system or access point (Access Point, AP) equipment；It can be the terminal in wired system Equipment, such as CM (Cable Modem), it is also possible to be wireless access terminal, such as mobile phone, wireless data card etc..

The schematic flow sheet of the multiple access method that Fig. 1 provides for one embodiment of the invention, as it is shown in figure 1, include:

101, the network equipment receives packet, and described packet includes the identification information of terminal.

For example, arbitrary upper layer network entity needs the network equipment by the present embodiment to send packet to terminal Time, first can send packet to the network equipment of the present embodiment, wherein, packet include the end receiving described packet End identification information, the identification information of described terminal can include but not limited to the IP address of described terminal, MAC Address and with Too EPON (Ethernet Passive Optic Network, EPON) logic connection identifier (Logical Link Identifier, LLID), Gigabit Passive Optical Network (Gigabit Passive Optic Network, GPON) port-mark The information such as port ID.

102, according to the identification information of described terminal, inquiry terminal identification information and the mapping table of broadcast channel, really The fixed broadcast channel corresponding with the identification information of described terminal, the described broadcast channel determined is default multiple broadcast channels One of them broadcast channel, described terminal is any one terminal in the set of terminal corresponding with the described broadcast channel determined.

In an optional embodiment of the present embodiment, before step 102, the described network equipment receives described terminal Characteristic information, the characteristic information of described terminal can include but not limited to the signal to noise ratio of described terminal, the grade of service and bandwidth The information such as demand；According to the characteristic information of described terminal, determine the broadcast channel corresponding with the characteristic information of described terminal；Citing For, the characteristic information of described terminal also includes the identification information of described terminal, the network equipment can set up described terminal Identification information and the corresponding relation of described broadcast channel.

When implementing, the physical resource dividing on transmission medium that multiple terminals are shared by the network equipment in advance is two Or two or more broadcast channel；It should be noted that above-mentioned transmission medium includes multiple access technique institute in wireless communication system The transmission medium used, also includes the transmission medium that in wired communication system, multiple access technique is used.

After terminal powers on, default each broadcast channel carrying out the training of physical layer, the training content of physical layer can wrap Including but be not limited to the training such as synchronization, channel estimation, equilibrium, terminal obtains the signal to noise ratio of each broadcast channel carrier wave respectively, Jiang Geguang The signal to noise ratio broadcasting passage is sent to the network equipment.

In an embodiment of the invention, the signal to noise ratio of each broadcast channel that the network equipment sends according to each terminal, The snr threshold that each broadcast channel is corresponding is set, however, it is determined that any one in the signal to noise ratio of each broadcast channel that terminal sends is wide Broadcast the snr threshold that the signal to noise ratio of passage is preset more than or equal to corresponding broadcast channel, this broadcast channel can be defined as and be somebody's turn to do The broadcast channel that the characteristic information of terminal is corresponding.

In further example, the network equipment, in above-mentioned default each broadcast channel, presets the clothes of each broadcast channel Business grade threshold, accordingly, the class of service information that the network equipment can send according to terminal, logical in above-mentioned default each broadcast In road, determine the broadcast channel corresponding with the characteristic information of this terminal.

In an optional embodiment of the present embodiment, before step 102, multiple terminals are shared by the network equipment Transmission medium (such as available carrier wave) arranges multiple broadcast channel.

In an optional embodiment of the present embodiment, use OFDM (Orthogonal Frequency Division Multiplexing, OFDM) technology, the available carrier wave in OFDM passage is divided into multiple broadcast channel, it is assumed that The available carrier wave of OFDM passage includes 2048 available carrier wave, and these carrier waves are divided into 4 broadcast channels, each broadcast channel bag Containing 512 available carrier wave, the method for salary distribution of carrier wave can include continuous or discrete, i.e. the carrier wave of a broadcast channel can be even 512 continuous available carrier wave, it is also possible to discrete distribution.The available carrier wave number that each broadcast channel comprises also can be unequal, example As 4 broadcast channels comprise 400,500,600 and 548 available carrier wave numbers respectively.

Fig. 2 is the schematic diagram that the present embodiment divides broadcast channel on frequency domain continuously；As in figure 2 it is shown, transverse axis one grid table Show that an orthogonal frequency division multiplex OFDM symbol, one grid of the longitudinal axis represent 128 carrier waves, 512 loads in each broadcast channel Ripple continuous print is distributed on the frequency axis.

Fig. 3 is the present embodiment schematic diagram of discrete division broadcast channel on frequency domain；As it is shown on figure 3, the longitudinal axis one grid table Show that 1 carrier wave, transverse axis one grid represent an orthogonal frequency division multiplex OFDM symbol, such as, carrier wave is divided into 4 broadcast channels, 4 The distribution of individual broadcast channel spaced discrete is on the frequency axis.

In an optional embodiment of the present embodiment, use OFDM technology, the available carrier wave in OFDM passage is led to Crossing time domain and be divided into multiple broadcast channel, Fig. 4 is the schematic diagram that the present embodiment divides broadcast channel in time domain, as shown in Figure 4, 2 continuous print orthogonal frequency division multiplex OFDMs accord with to be divided into 4 broadcast channels, each broadcast channel to include available carrier wave by time domain Number, such 8 OFDM symbol are a cycle, there are 4 different broadcast channels in each cycle.

In an optional embodiment of the present embodiment, the above-mentioned network equipment can be believed according to the feature of different terminals Breath, uses OFDM technology that shared available carrier wave is dynamically divided into multiple broadcast channel, and then determines and the spy of each terminal The broadcast channel that reference breath is corresponding.

When implementing, the network equipment can dynamically divide broadcast channel according to the characteristic information of terminal to report, and broadcast is logical Quantity and position that road comprises carrier wave all dynamically can divide according to actual conditions, as comprised 2048 available loads in OFDM passage Ripple, the most front 1024 carrier waves and rear 1024 carrier waves can be divided into 2 broadcast channels by the network equipment, it is also possible to will Front 512 carrier waves are divided into 1 broadcast channel, and centre 1024 and below 512 carrier waves are divided into other 2 broadcast channels.Draw The implementation dividing broadcast channel is unrestricted, can also discrete or otherwise divide broadcast channel when being embodied as.

The network equipment can be that each broadcast channel dynamically divides corresponding end according to the characteristic information of different terminals simultaneously End group (the corresponding set of terminal of each broadcast channel), such as, by end close for physical layer attributes information on this broadcast channel End is divided into one group, it should be noted that the close terminal quantity of physical layer attributes information there may be difference and causes in set of terminal There is difference in the terminal quantity comprised, the physical layer attributes information such as having 20 terminals is close, the physics of other 100 terminals Layer characteristic information is close, i.e. may divide a broadcast channel, by these 20 terminals for aforementioned 20 terminals in being embodied as Adding the set of terminal that this broadcast channel is corresponding, divide a broadcast channel for rear 100 terminals, these 100 terminals being added should The set of terminal that broadcast channel is corresponding；Fig. 5 is that the present embodiment dynamically divides the schematic diagram of broadcast channel according to the characteristic information of terminal, As it is shown in figure 5, available carrier wave can be divided into two broadcast channels, each broadcast channel correspondence physical layer attributes by the network equipment The set of terminal that information is close.

In another optional embodiment of the present embodiment, the physical resource on transmission medium that multiple terminals are shared At least include an OFDM passage, as the physical resource of the present embodiment includes multiple OFDM passage, the frequency range of each OFDM passage (Frequency bandwidth) can be identical or different；Wherein one or more OFDM passages can be divided into 1 extensively Broadcasting passage, the OFDM number of channels comprised in each broadcast channel can be identical or different.Fig. 6 is that the present embodiment application is many The schematic diagram of individual OFDM passage, wherein, the frequency range of each OFDM passage is 6MHz (megahertz), and each OFDM passage can be continuous Or scattered be distributed on frequency domain, can be using the most every 1 OFDM passage as 1 broadcast channel, also will wherein 2 or multiple OFDM passage is as 1 broadcast channel.When implementing, can be (as shown in Figure 6, different with synchronized transmission between each OFDM passage OFDM interchannel OFDM symbol is alignd), it is also possible to asynchronous transmission, independently of one another.

It should be noted that in above-mentioned default multiple broadcast channels, respectively including at least one in each broadcast channel Available carrier wave, different broadcast channels can not comprise identical available carrier wave.The corresponding set of terminal of each broadcast channel, an end End group at least includes a terminal；Different terminals group can comprise identical terminal, such as, the signal to noise ratio phase of two terminals Closely, according to the signal to noise ratio of terminal, two terminals can be divided into same set of terminal, it is possible to use the broadcast corresponding with this set of terminal Passage, the most such as, the grade of service of this two terminal is different, can this two terminal be divided in different set of terminal, this two terminal Use the broadcast channel corresponding with the set of terminal of each ownership respectively.

In an optional embodiment of the present embodiment, the network equipment according to the characteristic information of described terminal, determine with After the broadcast channel that the characteristic information of described terminal is corresponding, the identification information of described terminal and described broadcast channel can be set up Corresponding relation, when implementing, for example, the network equipment can be by the identification information of described terminal and described broadcast channel Corresponding relation be saved in the mapping table of terminal identification information and broadcast channel, such that it is able to realize connecing when the network equipment When receiving packet, according to the identification information of the terminal in packet, inquiry terminal identification information is corresponding with broadcast channel closes It is table, obtains the broadcast channel corresponding with the identification information of this terminal.

In an optional embodiment of the present embodiment, if there is two and plural broadcast channel and an end During end coupling, a broadcast channel transmission packet can only be used, it is impossible to split by a packet, respectively different Broadcast channel is transmitted.

When implementing, the network equipment can be according to the data transfer demands of terminal, corresponding with this terminal identification information Multiple broadcast channels in, determine that a broadcast channel carries out data transmission；Such as, terminal needs signal to noise ratio allowance (SNR Margin) higher broadcast channel downloads data, and packet can be transferred to end by corresponding broadcast channel by the network equipment End.

The network equipment can also determine the broadcast channel transmitting this packet, such as, foradownloaded video according to packet attribute During packet, higher to the service class requirements of broadcast channel, the network equipment can be higher by the grade of service by packet Broadcast channel be transferred to terminal.

The network equipment can lead in the multiple broadcast corresponding with this terminal identification information according to the service condition of broadcast channel In road, rationally determine that a broadcast channel carries out data transmission, thus avoid the crowded of broadcast channel.

In an optional embodiment of the present embodiment, the above-mentioned network equipment is according to the characteristic information of different terminals and end The real needs of end, physical resource is divided into flexibly multiple broadcast channel and set of terminal corresponding to each broadcast channel it After, can be according to the characteristic information of set of terminal corresponding to each broadcast channel, the modulation parameter of the corresponding broadcast channel of configuration is (as adjusted Exponent number processed), it is possible to increase the overall service efficiency of resource.

It should be noted that can by the modulation parameter corresponding to each available carrier wave configuration comprised in broadcast channel, Thus realize configuration to broadcast channel modulation parameter, to the modulation parameter of available carrier wave each in broadcast channel whether the present embodiment Identical being not construed as limiting, each available carrier wave can use identical modulation parameter for different terminals.

In an optional embodiment of the present embodiment, the network equipment sets up identification information and the broadcast channel of terminal After corresponding relation, the identification information of broadcast channel can be sent to terminal by the network equipment, so that terminal utilizes this broadcast to lead to The modulation parameter in road, demodulating data bag in this broadcast channel.

It should be noted that before or after the identification information of broadcast channel is sent to terminal by the network equipment, network The modulation parameter of each broadcast channel can be sent to this broadcast channel corresponding by the way of broadcast or clean culture by equipment Each terminal in set of terminal, so that terminal utilizes the identification information of the broadcast channel that the network equipment sends, obtains this broadcast and leads to The modulation parameter in road, further, utilizes the modulation parameter of this broadcast channel to demodulate the packet of transmission in this broadcast channel, from And avoid the network equipment before sending each packet, need to send bearing resource distribution the specific of information to terminal and disappear Breath, reduces signaling consumption.

It should be noted that the modulation parameter of above-mentioned each broadcast channel includes each available carrier wave in corresponding broadcast channel Modulation parameter.

It should be noted that the characteristic information of above-mentioned terminal includes one in signal to noise ratio, the grade of service and bandwidth demand Or it is multiple.

Above-mentioned broadcast channel includes: at least one orthogonal frequency division multiplex OFDM symbol of different time domain, or different frequency domain At least one orthogonal frequency division multiplex OFDM passage at least one carrier wave, or frequency domain.

103, according to the identification information of described terminal, by described broadcast channel, described packet is sent to described end End, so that described terminal utilizes the modulation parameter of described broadcast channel, demodulates described packet.

In actual applications, the corresponding set of terminal of each broadcast channel, each set of terminal at least includes a terminal, Therefore, the different pieces of information bag being sent to multiple terminal can be transmitted, the most just by the network equipment by same broadcast channel Being to say, multiple terminals can be used in conjunction with a broadcast channel and obtain respective packet.

When implementing, for the respective packet of the terminal recognition making this packet of reception, the network equipment is according to pre- If data frame format, respectively the packet being sent to different terminals is packaged process, respectively by after each encapsulation process Packet modulate in the broadcast channel of correspondence, it should be noted that broadcast channel includes multiple available carrier wave, therefore, Packet after each encapsulation process can be modulated respectively in the arbitrary available carrier wave in corresponding broadcast channel.

In an optional embodiment of the present invention, packet encapsulation can be ethernet data frame by the network equipment, Ethernet data frame after encapsulation is modulated in the arbitrary available carrier wave in broadcast channel.

The structural representation of the ethernet data frame that table 1 is applied for the present embodiment；

It should be noted that one of optional embodiment that above-mentioned Ethernet data frame format is the present invention, this area skill Art personnel are not it is understood that default data frame format is defined by the present embodiment.

It should be noted that the mode bag on the above-mentioned broadcast channel that packet after each encapsulation process is modulated correspondence Include but be not limited to existing modulator approach, such as, use OFDM modulation, quadrature amplitude modulation (Quadrature Amplitude Modulation, QAM) or phase-shift keying (PSK) (Phase Shift Keying, PSK), Frame is modulated each broadcast and leads to On the carrier wave that road is corresponding, the conversion of time-frequency domain can be realized by Fast Fourier Transform (FFT) or inverse transformation (FFT/IFFT).

Wherein, the orthogonal signalling in OFDM technology are carried out separately, so in the end receiving data by correlation technique Interfering between each broadcast channel can be reduced, and the signal bandwidth on each broadcast channel is less than whole broadcast channel The correlation bandwidth of (the multiple broadcast channel sums preset), therefore, the flatness decline of each broadcast channel can eliminate symbol Between interference, it is achieved channel equalization.

In an optional embodiment of the present embodiment, when scene or other aspects of multicarrier system application occur During change (such as other noise jamming newly-increased), cause the packet error rate that this terminal is demodulated by correspondence broadcast channel relatively Height, this terminal can send characteristic information change message to the network equipment, and wherein, characteristic information change message includes that this terminal is worked as Before characteristic information, the network equipment can redefine the feature letter current with this terminal according to the current characteristic information of terminal The broadcast channel that breath is corresponding, further, according to the broadcast channel redefined, adjusts the end preserved in above-mentioned mapping table Corresponding relation between identification information and the broadcast channel of end, further, the identification information of the broadcast channel after adjusting is sent out Give terminal, so that demodulating data in the broadcast channel that the modulation parameter of the broadcast channel after terminal utilization adjustment is after the adjustment Bag.

In an optional embodiment of the present embodiment, terminal can periodically detect current (as every 10 minutes) Characteristic information, scene or other aspects in multicarrier system application change (such as other noise jamming newly-increased) time, Can send characteristic information change message wherein to the network equipment in time, characteristic information change message includes the spy that this terminal is current Reference ceases, so that the network equipment redefines the broadcast channel that the characteristic information current with this terminal is corresponding, further, according to The broadcast channel redefined, adjust in above-mentioned mapping table preserve terminal identification information and broadcast channel between right Should be related to, further, the identification information of broadcast channel after adjusting is sent to terminal so that terminal utilize after adjusting wide Broadcast demodulating data bag in the modulation parameter of passage broadcast channel after the adjustment.

In an optional embodiment of the present embodiment, when scene or other aspects of multicarrier system application occur During change (such as other noise jamming newly-increased), the network equipment, after receiving characteristic information change message, adjusts the broadcast preset The modulation parameter (such as order of modulation) of passage, it should be noted that this broadcast channel preset is to preserve in above-mentioned corresponding lists Broadcast channel corresponding to the identification information with this terminal, the modulation parameter after adjusting is sent to this broadcast channel pair preset Each terminal in the set of terminal answered so that terminal utilize this broadcast channel adjust after modulation parameter, on broadcast channel Demodulating data bag.

The network equipment of the embodiment of the present invention, according to the identification information of the terminal comprised in the packet received, determines and is somebody's turn to do The broadcast channel that the identification information of terminal is corresponding, and packet is sent to terminal by this broadcast channel, solve existing skill The problem that in art, physical resource service efficiency is relatively low, it is possible to increase physical resource service efficiency, reduces the expense of signaling.

The schematic flow sheet of the multiple access method that Fig. 7 provides for another embodiment of the present invention, as it is shown in fig. 7, comprises:

701, terminal receives the packet that the network equipment is sent by broadcast channel, comprises the mark of terminal in described packet Knowledge information, described broadcast channel is that the described network equipment preserves according in the mapping table of terminal identification information and broadcast channel The corresponding relation of identification information and broadcast channel of terminal, the broadcast that the identification information with described terminal that determines is corresponding is led to Road, described one of them broadcast channel that broadcast channel is default multiple broadcast channels determined, described terminal be described really Any one terminal in the set of terminal that fixed broadcast channel is corresponding.

In the present embodiment, when the network equipment receives the packet that arbitrary upper layer network entity sends, according in packet The terminal identification information comprised, for example, the mapping table of inquiry terminal identification information and broadcast channel, determine with The broadcast channel that the identification information of described terminal is corresponding, sends packet by described broadcast channel to terminal.

In an optional embodiment of the present embodiment, terminal receives the data that the network equipment is sent by broadcast channel Before bag, terminal can send the characteristic information of this terminal to the network equipment, so that the network equipment is according to the characteristic information of terminal, Determine the broadcast channel corresponding with the characteristic information of this terminal, set up the identification information of described terminal and the right of described broadcast channel Answer relation table；The most first set up the identification information of described terminal and the corresponding relation of described broadcast channel, by the mark of described terminal Information is saved in the terminal identification information mapping table with broadcast channel with the corresponding relation of described broadcast channel, will be with this The identification information of the broadcast channel that the characteristic information of terminal is corresponding is sent to terminal.

It should be noted that about the network equipment according to the characteristic information of terminal, determine the characteristic information pair with this terminal The broadcast channel answered, sets up the identification information of described terminal and the corresponding relation of described broadcast channel, and detailed description may refer to Related content in the step 102 of the embodiment that Fig. 1 is corresponding, here is omitted.

It should be noted that before terminal receives the packet that the network equipment is sent by broadcast channel, the network equipment can In the way of by broadcast or clean culture, the modulation parameter of each broadcast channel is sent to the terminal that this broadcast channel is corresponding Any terminal in group, so that terminal utilizes the identification information of the broadcast channel that the network equipment sends, obtains the tune of this broadcast channel Parameter processed, further, utilizes the modulation parameter of this broadcast channel to demodulate the packet of transmission in this broadcast channel, thus avoids The network equipment, before sending each packet, needs to send to terminal the particular message of bearing resource distribution information, reduces Signaling consumption.

For example, terminal is receiving broadcast channel corresponding to the characteristic information with described terminal that the network equipment sends Before or after identification information, also receive the modulation parameter of each broadcast channel that the network equipment sends, by each broadcast channel Corresponding relation between modulation parameter and the identification information of corresponding broadcast channel is saved in modulation parameter table.

In further example, terminal is receiving broadcast corresponding to the characteristic information with described terminal that the network equipment sends After the identification information of passage, according to the identification information of broadcast channel, inquire about above-mentioned modulation parameter table, obtain and broadcast channel The modulation parameter that identification information is corresponding.

It should be noted that the modulation parameter of above-mentioned broadcast channel includes the modulation of each available carrier wave in corresponding broadcast channel Parameter, each available carrier wave can use identical modulation parameter for different terminals, and the present embodiment respectively may be used in broadcast channel It is not construed as limiting with the modulation parameter of carrier wave is the most identical.

It is one or more that the characteristic information of the terminal of the present embodiment includes in signal to noise ratio, the grade of service and bandwidth demand.

The broadcast channel of the present embodiment includes: at least one orthogonal frequency division multiplex OFDM symbol of different time domain, or different At least one orthogonal frequency division multiplex OFDM passage at least one carrier wave, or frequency domain of frequency domain.

702, described terminal utilizes the modulation parameter of described broadcast channel, demodulates described packet.

In a practical situation, the corresponding set of terminal of each broadcast channel, each set of terminal includes at least one terminal, Therefore, the different pieces of information bag being sent to multiple terminal can be transmitted by the network equipment by same broadcast channel, multiple Terminal can be used in conjunction with a broadcast channel and obtain respective packet.

When implementing, terminal, in order to obtain respective packet, utilizes the modulation parameter of this broadcast channel, demodulates institute Stating the data stream in broadcast channel, described data stream includes that the network equipment will be sent to each end according to the data frame format preset After the packet of end is packaged processing respectively and the corresponding data bag of modulating in described broadcast channel；Demodulate described In data stream, according to the identification information of the terminal comprised in default data frame format and described data frame format, obtain described The packet of terminal.

The packet being sent to different terminals can be entered respectively by the network equipment of the present embodiment according to default Frame Row encapsulation process, describes the related content in the step 103 that may refer to embodiment corresponding for Fig. 1 in detail, and here is omitted.

In an optional embodiment of the present embodiment, when scene or other aspects of multicarrier system application occur During change (such as other noise jamming newly-increased), the packet error rate causing this terminal to demodulate in this broadcast channel is higher, This terminal can send characteristic information change message to the network equipment, and wherein, characteristic information change message includes that this terminal is current Characteristic information, the network equipment can redefine the characteristic information current with this terminal according to the current characteristic information of terminal Corresponding broadcast channel, further, according to the broadcast channel redefined, adjusts the terminal preserved in above-mentioned mapping table Identification information and broadcast channel between corresponding relation, further, will adjust after broadcast channel identification information send To terminal, so that demodulating data bag in the broadcast channel that the modulation parameter of the broadcast channel after terminal utilization adjustment is after the adjustment.

In an optional embodiment of the present embodiment, terminal can periodically detect current (as every 10 minutes) Characteristic information, scene or other aspects in multicarrier system application change (such as other noise jamming newly-increased) time, Can send characteristic information change message wherein to the network equipment in time, characteristic information change message includes the spy that this terminal is current Reference ceases, so that the network equipment redefines the broadcast channel that the characteristic information current with this terminal is corresponding, further, according to The broadcast channel redefined, adjusts between identification information and the broadcast channel of the terminal preserved in above-mentioned mapping table Corresponding relation, further, the identification information of the broadcast channel after adjusting is sent to terminal, so that terminal utilizes after adjusting Demodulating data bag in the modulation parameter of broadcast channel broadcast channel after the adjustment.

In an optional embodiment of the present embodiment, when scene or other aspects of multicarrier system application occur During change (such as other noise jamming newly-increased), the network equipment is after receiving characteristic information change message, it is possible to adjustment is preset The modulation parameter (such as order of modulation) of broadcast channel, it should be noted that this broadcast channel preset is above-mentioned mapping table The broadcast channel that the identification information with this terminal of middle preservation is corresponding, the modulation parameter after adjusting is sent to this broadcast preset Each terminal in the set of terminal that passage is corresponding so that terminal utilize this broadcast channel adjust after modulation parameter, broadcast Demodulating data bag on passage.

The broadcast that the identification information with this terminal that the terminal of the embodiment of the present invention pre-sets according to the network equipment is corresponding Passage, directly utilizes the modulation parameter of this broadcast channel, demodulating data bag, it is possible to solve resource utilization in prior art low Problem, improve resource utilization, reduce signaling expense.

It should be understood that for aforesaid each method embodiment, in order to be briefly described, therefore it is all expressed as a series of Combination of actions, but those skilled in the art should know, the present invention is not limited by described sequence of movement because According to the present invention, some step can use other orders or carry out simultaneously.Secondly, those skilled in the art also should know Knowing, embodiment described in this description belongs to preferred embodiment, involved action and the module not necessarily present invention Necessary.

In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not has the portion described in detail in certain embodiment Point, may refer to the associated description of other embodiments.

The structural representation of the network equipment that Fig. 8 provides for another embodiment of the present invention, as shown in Figure 8, the present embodiment The network equipment may include that

First receiver module 81, is used for receiving packet, and described packet includes the identification information of terminal；

First determines module 82, for the identification information according to described terminal, inquiry terminal identification information and broadcast channel Mapping table, determine the broadcast channel corresponding with the identification information of described terminal, the described broadcast channel determined is default One of them broadcast channels of multiple broadcast channels, described terminal is in the set of terminal corresponding with the described broadcast channel determined Any one terminal；

First sending module 83, for the identification information according to described terminal, by the described broadcast channel determined, by institute State packet and be sent to described terminal, so that described terminal utilizes the modulation parameter of the described broadcast channel determined, demodulate institute State packet.

In an optional embodiment of the present embodiment, the first receiver module 81, it is additionally operable to receive described terminal and sends The characteristic information of described terminal；

The described network equipment also includes:

Second determines module 84, for the characteristic information according to described terminal, determines and the characteristic information pair of described terminal The broadcast channel answered；

Set up module 85, for setting up the identification information of described terminal and the mapping table of described broadcast channel, specifically For the corresponding relation of the identification information of described terminal Yu described broadcast channel is saved in described terminal identification information and broadcast In the mapping table of passage.Describe the related content in the step 102 that may refer to embodiment corresponding for Fig. 1 in detail, herein Repeat no more.

In an optional embodiment of the present embodiment, the first sending module 83, it is additionally operable to described broadcast channel Identification information is sent to described terminal, so that described terminal obtains and described broadcast according to the identification information of described broadcast channel The modulation parameter demodulating data bag that the identification information of passage is corresponding.

It should be noted that for the overall service efficiency that improve resource, the network equipment described in the present embodiment according to The characteristic information of different terminals and the real needs of terminal, physical resource is divided into flexibly multiple broadcast channel and each extensively Broadcast the set of terminal that passage is corresponding, describe the related content in the step 102 that may refer to embodiment corresponding for Fig. 1 in detail, herein Repeat no more.Then, according to the characteristic information of set of terminal corresponding to each broadcast channel, the modulation ginseng of the corresponding broadcast channel of configuration Number (such as order of modulation), accordingly, the first sending module 83, it is additionally operable to by the way of broadcast or clean culture, by default every The modulation parameter of individual broadcast channel is sent to each terminal in the set of terminal that this broadcast channel is corresponding, so that terminal utilizes network The identification information of the broadcast channel that equipment sends, obtains the modulation parameter of this broadcast channel, further, utilizes this broadcast channel Modulation parameter demodulate in this broadcast channel the packet of transmission, thus avoid the network equipment send each packet it Before, need to send to terminal the particular message of bearing resource distribution information, reduce signaling consumption.

It should be noted that the configuration that the network equipment is to broadcast channel modulation parameter, when implementing, can be by extensively The modulation parameter broadcasting each available carrier wave configuration comprised in passage corresponding realizes, and the present embodiment is to available load each in broadcast channel Wave modulation parameter is the most identical to be not construed as limiting, and each available carrier wave can use identical modulation parameter for different terminals.

In an optional embodiment of the present embodiment, the first receiver module 81, it is additionally operable to receive described terminal and sends Characteristic information change message, described characteristic information change message include the characteristic information that described terminal is current；

Second determines module 84, is additionally operable to the characteristic information current according to described terminal, determines current with described terminal The broadcast channel that characteristic information is corresponding；

Set up module 85, be additionally operable to according to the second characteristic information current with described terminal determining that module 84 determines corresponding Broadcast channel, adjust between the broadcast channel that the identification information of described terminal preserved in described mapping table is corresponding is right Should be related to；

In an optional embodiment of the present embodiment, the first sending module 83, it is additionally operable to send to described terminal adjust The identification information of the broadcast channel after whole, the characteristic information that the broadcast channel after described adjustment is current with described terminal is corresponding Broadcast channel.

The described network equipment also includes: adjusting module 86, for the described feature letter received according to the first receiver module 81 Breath changes the characteristic information that the terminal comprised in message is current, adjusts the mark of the described terminal preserved in described mapping table The modulation parameter of the broadcast channel that information is corresponding；

In an optional embodiment of the present embodiment, the first sending module 83, it is additionally operable to adjust adjusting module 86 After modulation parameter formula be sent to described terminal.

In an optional embodiment of the present embodiment, the first sending module 83, specifically for according to the data preset Described packet is packaged processing by frame format, is modulated in described broadcast channel by the packet after described encapsulation process.

It should be noted that the packet being sent to terminal is packaged respectively by the present embodiment according to default Frame Processing, describe the related content in the step 103 that may refer to embodiment corresponding for Fig. 1 in detail, here is omitted.

It should be noted that the characteristic information of above-mentioned terminal includes one in signal to noise ratio, the grade of service and bandwidth demand Or it is multiple；

The network equipment described in the present embodiment specifically can perform the multi-carrier transmission described in embodiment of the method shown in Fig. 1 Method, it realizes principle and technique effect repeats no more.

The structural representation of the terminal that Fig. 9 provides for another embodiment of the present invention, as it is shown in figure 9, the terminal of the present embodiment May include that

Second receiver module 91, for receiving the packet that the network equipment is sent by broadcast channel, in described packet Comprising the identification information of terminal, described broadcast channel is that the described network equipment is corresponding with broadcast channel according to terminal identification information The corresponding relation of identification information and the broadcast channel of the terminal preserved in relation table is that determine with described terminal identification information pair The broadcast channel answered, described one of them broadcast channel that broadcast channel is default multiple broadcast channels determined, described end End is any one terminal in the set of terminal that the described broadcast channel determined is corresponding；

Demodulation module 92, utilizes the modulation parameter of described broadcast channel for described terminal, demodulates described packet.

In an optional embodiment of the present embodiment, described terminal also includes:

Second sending module 93, for sending the characteristic information of described terminal to the described network equipment, so that described network Equipment, according to the characteristic information of described terminal, determines the broadcast channel corresponding with the characteristic information of described terminal, sets up described end The identification information of end and the mapping table of described broadcast channel.

In an optional embodiment of the present embodiment, the second receiver module 91, it is additionally operable to receive the described network equipment The identification information of the described broadcast channel sent.

It should be noted that the network equipment characteristic information according to different terminals and the real needs of terminal, physics is provided Source is divided into multiple broadcast channel and set of terminal corresponding to each broadcast channel flexibly, describes that to may refer to Fig. 1 corresponding in detail Embodiment step 102 in related content, here is omitted.Then, according to the set of terminal that each broadcast channel is corresponding Characteristic information, the modulation parameter (such as order of modulation) of the corresponding broadcast channel of configuration, by the way of broadcast or clean culture, will join The modulation parameter of each broadcast channel put is sent to each terminal in the set of terminal that this broadcast channel is corresponding.

For example, the second receiver module 91 is corresponding at the characteristic information with described terminal receiving network equipment transmission Before or after the identification information of broadcast channel, the second receiver module 91, it is additionally operable to receive each broadcast that the network equipment sends The modulation parameter of passage, protects the corresponding relation between modulation parameter and the identification information of corresponding broadcast channel of each broadcast channel Exist in modulation parameter table；

In further example, the second receiver module 91 is receiving the characteristic information with described terminal that the network equipment sends After the identification information of corresponding broadcast channel, the second receiver module 91, it is additionally operable to the identification information according to broadcast channel, inquiry Modulation parameter table, obtains the modulation parameter corresponding with the identification information of broadcast channel.

In an optional embodiment of the present embodiment, the second sending module 93, it is additionally operable to send out to the described network equipment Sending characteristic information to change message, described characteristic information change message includes the characteristic information that described terminal is current, so that described The network equipment, according to the current characteristic information of described terminal, determines that the broadcast that the characteristic information current with described terminal is corresponding is led to Road, according to the broadcast channel that the characteristic information current with described terminal is corresponding, adjusts preserve in described mapping table described Corresponding relation between identification information and the described broadcast channel of terminal；

Second receiver module 91, is additionally operable to the mark of the broadcast channel after receiving the described adjustment that the described network equipment sends Information, the broadcast channel that characteristic information that the broadcast channel after described adjustment is current with described terminal is corresponding.

In an optional embodiment of the present embodiment, the second sending module 93, it is additionally operable to send out to the described network equipment Sending characteristic information to change message, described characteristic information change message includes the characteristic information that described terminal is current, so that described The network equipment, according to the current characteristic information of described terminal, adjusts the mark letter of the described terminal preserved in described mapping table The modulation parameter of the broadcast channel that breath is corresponding；

Second receiver module 91, is additionally operable to the modulation parameter after receiving the adjustment that the described network equipment sends.

In an optional embodiment of the present embodiment, demodulation module 92, specifically for utilizing described broadcast channel Modulation parameter, demodulates the data stream in described broadcast channel, and described data stream includes that the described network equipment is according to the number preset After being packaged described packet processing according to frame format and modulate the packet in described broadcast channel, demodulate described Data stream in, according to the identification information of the terminal in described default data frame format and described data frame format, obtain institute State the packet of terminal.

Terminal described in the present embodiment specifically can perform the multi-carrier transmission side described in embodiment of the method shown in Fig. 7 Method, it realizes principle and technique effect repeats no more.

Another embodiment of the present invention provides a kind of multiple access system, provides including in the embodiment that above-mentioned Fig. 8 is corresponding The network equipment embodiment corresponding with above-mentioned Fig. 9 in the terminal that provides.It is corresponding that the detailed description of the network equipment may refer to Fig. 8 Embodiment in related content, the detailed description of terminal may refer to the related content in the embodiment that Fig. 9 is corresponding, the most not Repeat again.

Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, and the system of foregoing description, The specific works process of device and unit, is referred to the corresponding process in preceding method embodiment, does not repeats them here.

In several embodiments provided herein, it should be understood that disclosed system, apparatus and method are permissible Realize by another way.Such as, device embodiment described above is only schematically, such as, and described unit Dividing, be only a kind of logic function and divide, actual can have other dividing mode, the most multiple unit or assembly when realizing Can in conjunction with or be desirably integrated into another system, or some features can be ignored, or does not performs.Another point, shown or The coupling each other discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit Close or communication connection, can be electrical, machinery or other form.

The described unit illustrated as separating component can be or may not be physically separate, shows as unit The parts shown can be or may not be physical location, i.e. may be located at a place, or can also be distributed to multiple On NE.Some or all of unit therein can be selected according to the actual needs to realize the mesh of the present embodiment scheme 's.

It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to It is that unit is individually physically present, it is also possible to two or more unit are integrated in a unit.Above-mentioned integrated list Unit both can realize to use the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit and realizes.

The above-mentioned integrated unit realized with the form of SFU software functional unit, can be stored in an embodied on computer readable and deposit In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions with so that a computer Equipment (can be personal computer, server, or the network equipment etc.) performs the portion of method described in each embodiment of the present invention Step by step.And aforesaid storage medium includes: (Read-Only Memory is called for short for USB flash disk, portable hard drive, read-only storage ROM), random access memory (Random Access Memory is called for short RAM), magnetic disc or CD etc. are various can store The medium of program code.

Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although With reference to previous embodiment, the present invention is described in detail, it will be understood by those within the art that: it still may be used So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent； And these amendment or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and Scope.

Claims

1. a multiple access method, it is characterised in that including:

According to the identification information of described terminal, inquiry terminal identification information and the mapping table of broadcast channel, determine with described The broadcast channel that the identification information of terminal is corresponding；

By the described broadcast channel determined, described packet is sent to the described terminal corresponding with described identification information, with Make the described terminal corresponding with described identification information utilize the modulation parameter of the described broadcast channel determined, demodulate described data Bag.

Method the most according to claim 1, it is characterised in that the described identification information according to described terminal, inquires about terminal Identification information and the mapping table of broadcast channel, before determining the broadcast channel corresponding with the identification information of described terminal, wrap Include:

Receive the characteristic information of the described terminal that described terminal sends；

According to the characteristic information of described terminal, determine the broadcast channel corresponding with the characteristic information of described terminal；

Set up the identification information of described terminal and the mapping table of described broadcast channel.

Method the most according to claim 2, it is characterised in that the described identification information setting up described terminal and described broadcast After the mapping table of passage, also include:

Receiving the characteristic information change message that described terminal sends, described characteristic information change message includes that described terminal is current Characteristic information；

According to the characteristic information that described terminal is current, determine the broadcast channel that the characteristic information current with described terminal is corresponding, root According to the broadcast channel that the characteristic information current with described terminal is corresponding, adjust the mark of described terminal in described mapping table Information and the corresponding relation of described broadcast channel；

Or according to the characteristic information that described terminal is current, adjust the identification information with described terminal in described mapping table The modulation parameter of corresponding broadcast channel.

4. according to the method according to any one of claim 1-3, it is characterised in that the characteristic information of described terminal includes noise One or more than in, the grade of service and bandwidth demand.

5. according to the method according to any one of claim 1-3, it is characterised in that described broadcast channel includes: different time domain At least one orthogonal frequency division multiplex OFDM symbol, or at least one at least one carrier wave, or frequency domain of different frequency domain is just Hand over frequency division multiplex OFDM passage.

6. a multiple access method, it is characterised in that including:

Terminal receives the packet that the network equipment is sent by broadcast channel, comprises the identification information of terminal in described packet, Described broadcast channel is that the described network equipment is according to the terminal preserved in the mapping table of terminal identification information and broadcast channel The corresponding relation of identification information and broadcast channel, the broadcast channel that the identification information with described terminal that determines is corresponding；

Described terminal utilizes the modulation parameter of the described broadcast channel receiving described packet, demodulates the data of described broadcast channel Bag.

Method the most according to claim 6, it is characterised in that described terminal is received the network equipment and sent by broadcast channel Packet before, including:

The characteristic information of the described terminal described terminal of transmission is to the described network equipment, so that the described network equipment is according to described terminal Characteristic information, determine the broadcast channel corresponding with the characteristic information of described terminal, set up identification information and the institute of described terminal State the mapping table of broadcast channel.

8. according to the method according to any one of claim 6-7, it is characterised in that the characteristic information of described terminal includes noise One or more than in, the grade of service and bandwidth demand.

9. according to the method according to any one of claim 6-7, it is characterised in that described broadcast channel includes: different time domain At least one orthogonal frequency division multiplex OFDM symbol, or at least one at least one carrier wave, or frequency domain of different frequency domain is just Hand over frequency division multiplex OFDM passage.

10. a network equipment, it is characterised in that including:

First determines module, and for the identification information according to described terminal, inquiry terminal identification information is corresponding with broadcast channel Relation table, determines the broadcast channel corresponding with the identification information of described terminal；

First sending module, for by the described broadcast channel determined, is sent to described packet and described identification information Corresponding described terminal, so that described terminal utilizes the modulation parameter of the described broadcast channel determined, demodulates described packet.

11. network equipments according to claim 10, it is characterised in that described first receiver module, are additionally operable to receive institute State the characteristic information of the described terminal that terminal sends；

The described network equipment also includes:

Second determines module, for according to the characteristic information of described terminal, determines corresponding with the characteristic information of described terminal wide Broadcast passage；

Set up module, for setting up the identification information of described terminal and the mapping table of described broadcast channel.

12. network equipments according to claim 11, it is characterised in that described first receiver module, are additionally operable to receive institute Stating the characteristic information change message that terminal sends, described characteristic information change message includes the feature letter that described terminal is current Breath；

Described second determines module, is additionally operable to the characteristic information current according to described terminal, determines the spy current with described terminal The broadcast channel that reference breath is corresponding；

Described set up module, be additionally operable to according to the described second characteristic information current with described terminal determining that module determines corresponding Broadcast channel, adjust the identification information of described terminal preserved in described mapping table pass corresponding with described broadcast channel System；

Or also include: adjusting module, for the characteristic information current according to described terminal, adjust in described mapping table and protect The modulation parameter of the broadcast channel that the identification information with described terminal deposited is corresponding.

13. according to the network equipment according to any one of claim 10-12, it is characterised in that the characteristic information of described terminal One or more including in signal to noise ratio, the grade of service and bandwidth demand；

Described broadcast channel includes: at least one orthogonal frequency division multiplex OFDM symbol of different time domain, or different frequency domain is at least At least one orthogonal frequency division multiplex OFDM passage in one carrier wave, or frequency domain.

14. 1 kinds of terminals, it is characterised in that including:

Second receiver module, for receiving the packet that the network equipment is sent by broadcast channel, comprises end in described packet The identification information of end, described broadcast channel is the described network equipment mapping table according to terminal identification information Yu broadcast channel The identification information of the terminal of middle preservation and the corresponding relation of broadcast channel, corresponding wide of the identification information with described terminal that determines Broadcast passage；

Demodulation module, for utilizing the modulation parameter of the described broadcast channel receiving described packet, demodulates described packet.

15. terminals according to claim 14, it is characterised in that also include:

Second sending module, for sending the characteristic information of described terminal to the described network equipment, so that described network equipment root According to the characteristic information of described terminal, determine the broadcast channel corresponding with the characteristic information of described terminal, set up the mark of described terminal Knowledge information and the mapping table of described broadcast channel.

16. terminals according to claim 15, it is characterised in that described second sending module, are additionally operable to described network Equipment sends characteristic information change message, and described characteristic information change message includes the characteristic information that described terminal is current, with Make the described network equipment according to the current characteristic information of described terminal, determine corresponding wide of the characteristic information current with described terminal Broadcast passage, according to the broadcast channel that the characteristic information current with described terminal is corresponding, adjust preservation in described mapping table The identification information of described terminal and the corresponding relation of described broadcast channel；

Or described second sending module, is additionally operable to send characteristic information change message to the described network equipment, and described feature is believed Breath change message includes the characteristic information that described terminal is current, so that the described network equipment is according to the current feature of described terminal Information, adjusts the modulation parameter of broadcast channel corresponding to the identification information with described terminal preserved in described mapping table.

17. according to the terminal according to any one of claim 14-16, it is characterised in that described demodulation module, specifically for profit By the modulation parameter of described broadcast channel, demodulating the data stream in described broadcast channel, described data stream includes described network After described packet is packaged processing by equipment according to the data frame format preset and modulate the number in described broadcast channel According to bag, in the described data stream demodulated, according to the terminal in described default data frame format and described data frame format Identification information, obtain the packet of described terminal.

18. according to the terminal according to any one of claim 14-16, it is characterised in that the characteristic information of described terminal includes One or more in signal to noise ratio, the grade of service and bandwidth demand；Described broadcast channel includes: at least one of different time domain is just Hand at least one OFDM in frequency division multiplex OFDM symbol, or at least one carrier wave, or frequency domain of different frequency domain OFDM passage.

19. 1 kinds of multiple access systems, it is characterised in that include the network equipment and terminal；

The described network equipment receives packet, and described packet includes the identification information of described terminal；

The described network equipment is according to the identification information of described terminal, inquiry terminal identification information and the corresponding relation of broadcast channel Table, determines the broadcast channel corresponding with the identification information of described terminal；

Described packet, according to the identification information of described terminal, by the described broadcast channel determined, is sent out by the described network equipment Give described terminal；

Described terminal receives the packet that the described network equipment is sent by broadcast channel, utilizes the described broadcast channel determined Modulation parameter, demodulates described packet.