CN102595632B - Method, system and device for random access - Google Patents
Method, system and device for random access Download PDFInfo
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- CN102595632B CN102595632B CN201110007069.3A CN201110007069A CN102595632B CN 102595632 B CN102595632 B CN 102595632B CN 201110007069 A CN201110007069 A CN 201110007069A CN 102595632 B CN102595632 B CN 102595632B
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- 239000000523 sample Substances 0.000 claims description 48
- 238000004891 communication Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
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Abstract
The invention discloses a method, a system and a device for random access, belonging to the field of channel access. The method comprises the following steps that: a M2M (Machine-to-Machine) terminal receives an access parameter issued by a network side device, wherein the parameter includes the offset related information; the M2M terminal obtains the differential offset between access windows of the M2M terminal and a H2H (Human-to-Human) terminal, wherein the offset is [1/2, 3/4] of the time length of the access window of the H2H terminal; and the M2M terminal performs random access according to the offset. Or, the network side device sets the differential offset between the access windows of the M2M terminal and the H2H terminal, wherein the offset is [1/2, 3/4] of the time length of the access window of the H2H terminal; and the network side device carries the offset in the access parameter to transmit to the M2M terminal, thereby enabling the M2M terminal to perform random access according to the offset. The invention further comprises the network side device and the M2M terminal, and a system formed by the network side device and the M2M terminal. In the method, the access collision probability of the H2H terminal and the M2M terminal on the same access window of the same carrier is reduced, and the terminal access performance is improved.
Description
Technical field
The present invention relates to channel access field, particularly a kind of method of random access, system and equipment.
Background technology
At present, MAC (Media Access Control, medium access control) layer random access procedure be select one access window, carry out access exploration in probe mode at this access window, if bumped, terminal will be waited for one section of random time, then reselect an access window and carry out access exploration, if do not bumped, terminal stops access exploration, and starts to access at random.
Existing MAC layer accidental access method, its access parameter comprises access side-play amount AccessOffset, represents the time of delay of terminal access window.For different carrier, as the different carrier of different sectors or same sector, it is the different AccessOffset of correspondence respectively, and AccessOffset has four kinds of value: 0/4/8/12slots (time slot) at present.But for same carrier wave, its AccessOffset is identical, on it, the AccessOffset of all terminals of access is identical.
Above-mentioned MAC layer accidental access method, the type that restriction does not access terminal, is namely applicable to all types of terminals.Originally in cordless communication network, be all H2H (Human to Human, Human To Human) terminal, along with the development of the communication technology, there is a large amount of M2M (Machine toMachine, machine is to machine) terminal in cordless communication network.The feature of M2M terminal communication is that data are shorter, and uplink communication number of times is far longer than downlink communication number of times.Access at random because M2M terminal and H2H terminal are all used said method to carry out MAC layer, when the two selection be the same access window of same carrier wave time, will there is access collision.Along with M2M terminal is more and more, and its uplink communication number of times is many, and the number of times that makes M2M terminal carry out random access increases greatly.Accordingly, the number of times bumping with H2H terminal also increases greatly.When collision frequency is greater than to a certain degree, will cause access delay excessive, affect the normal communication service of H2H terminal.
But, the access collision problem producing on the same access window of same carrier wave for M2M terminal and H2H terminal, prior art does not also have corresponding solution.
Summary of the invention
In order to reduce H2H terminal and the M2M terminal access collision probability on the same access window of same carrier wave, the embodiment of the present invention provides a kind of method, system and equipment of random access.Described technical scheme is as follows:
A method for random access, described method comprises:
Machine receives to machine M2M terminal the access parameter that network equipment issues, and described access parameter comprises side-play amount relevant information; Described side-play amount relevant information is the duration of the access window of described side-play amount or H2H terminal;
Described M2M terminal, according to described side-play amount relevant information, is obtained the side-play amount that the access window of described M2M terminal and the access window of Human To Human H2H terminal differ, and described side-play amount is [1/2,3/4] of the access window duration of described H2H terminal;
Wherein, in the time of the duration of the described side-play amount relevant information access window that is described H2H terminal, described M2M terminal, according to described side-play amount relevant information, is obtained the side-play amount that the access window of described M2M terminal and the access window of Human To Human H2H terminal differ, and comprising:
Described M2M terminal, according to Offset=M/N × [Duration-(Duration Mod N)], is determined the side-play amount that probe is corresponding,
Wherein, Offset represents the side-play amount that the probe of M2M terminal is corresponding, and Duration represents the duration of the access window of described H2H terminal, and unit is time slot, and Mod represents modulo operation, and M/N belongs to [1/2,3/4], and N is 2 n power, and M, N and n are positive integers;
Described M2M terminal accesses at random according to described side-play amount.
A kind of M2M terminal, described M2M terminal comprises: receiver module, acquisition module and access module;
Described receiver module, the access parameter issuing for receiving network equipment, described access parameter comprises side-play amount relevant information; Described side-play amount relevant information is the duration of the access window of described side-play amount or H2H terminal;
Described acquisition module, for according to described side-play amount relevant information, obtains the side-play amount that the access window of described M2M terminal and the access window of Human To Human H2H terminal differ, and described side-play amount is [1/2,3/4] of the access window duration of described H2H terminal;
Wherein, in the time of the duration of the described side-play amount relevant information access window that is described H2H terminal, described acquisition module, specifically for
According to Offset=M/N × [Duration-(Duration Mod N)], determine the side-play amount that probe is corresponding,
Wherein, Offset represents the side-play amount that the probe of M2M terminal is corresponding, and Duration represents the duration of the access window of described H2H terminal, and unit is time slot, and Mod represents modulo operation, and M/N belongs to [1/2,3/4], and N is 2 n power, and M, N and n are positive integers;
Described access module, for accessing at random according to described side-play amount.
A method for random access, described method comprises:
Network equipment arranges the access window of M2M terminal, the side-play amount that the access window of the access window of described M2M terminal and Human To Human H2H terminal differs, and described side-play amount is [1/2,3/4] of the access window duration of described H2H terminal;
Described network equipment issues access parameter to described M2M terminal, and described access parameter comprises side-play amount relevant information;
Wherein, the duration of the side-play amount that the access window that described side-play amount relevant information is described M2M terminal and the access window of H2H terminal differ or the access window of H2H terminal, make the duration of the access window of the H2H terminal that described M2M terminal issues according to described network equipment, determine the side-play amount that probe is corresponding, described M2M terminal is accessed at random according to described side-play amount;
Wherein, in the time of the duration of the described side-play amount relevant information access window that is described H2H terminal, make described M2M terminal according to described side-play amount relevant information, obtain the side-play amount that the access window of described M2M terminal and the access window of Human To Human H2H terminal differ, comprising:
Described M2M terminal, according to Offset=M/N × [Duration-(Duration Mod N)], is determined the side-play amount that probe is corresponding,
Wherein, Offset represents the side-play amount that the probe of M2M terminal is corresponding, and Duration represents the duration of the access window of described H2H terminal, and unit is time slot, and Mod represents modulo operation, and M/N belongs to [1/2,3/4], and N is 2 n power, and M, N and n are positive integers.
A kind of network equipment, described network equipment comprises: module and sending module are set;
The described module that arranges, the side-play amount differing for the access window of M2M terminal and the access window of Human To Human H2H terminal are set, described side-play amount is [1/2,3/4] of the access window duration of described H2H terminal;
Described sending module, for sending out access parameter to described M2M terminal, described access parameter comprises side-play amount relevant information;
Wherein, the duration of the side-play amount that the access window that described side-play amount relevant information is described M2M terminal and the access window of H2H terminal differ or the access window of H2H terminal, make the duration of the access window of the H2H terminal that described M2M terminal issues according to described network equipment, determine the side-play amount that probe is corresponding, described M2M terminal is accessed at random according to described side-play amount;
Wherein, in the time of the duration of the described side-play amount relevant information access window that is described H2H terminal, make described M2M terminal according to described side-play amount relevant information, obtain the side-play amount that the access window of described M2M terminal and the access window of Human To Human H2H terminal differ, comprising:
Described M2M terminal, according to Offset=M/N × [Duration-(Duration Mod N)], is determined the side-play amount that probe is corresponding,
Wherein, Offset represents the side-play amount that the probe of M2M terminal is corresponding, and Duration represents the duration of the access window of described H2H terminal, and unit is time slot, and Mod represents modulo operation, and M/N belongs to [1/2,3/4], and N is 2 n power, and M, N and n are positive integers.
A system for random access, described system comprises: network equipment and M2M terminal;
Described network equipment, for issuing access parameter to described M2M terminal, described access parameter comprises side-play amount relevant information;
Described M2M terminal, be used for according to described side-play amount relevant information, obtain the side-play amount that the access window of described M2M terminal and the access window of Human To Human H2H terminal differ, described side-play amount be described H2H terminal access window duration [1/2,3/4], access at random according to described side-play amount;
Wherein, in the time of the duration of the described side-play amount relevant information access window that is described H2H terminal, described M2M terminal comprises acquisition module and access module;
Described acquisition module, specifically for
According to Offset=M/N × [Duration-(Duration Mod N)], determine the side-play amount that probe is corresponding,
Wherein, Offset represents the side-play amount that the probe of M2M terminal is corresponding, and Duration represents the duration of the access window of described H2H terminal, and unit is time slot, and Mod represents modulo operation, and M/N belongs to [1/2,3/4], and N is 2 n power, and M, N and n are positive integers;
Described access module, specifically for
Select an access window, send probe taking described side-play amount as starting point at described access window and carry out access exploration, access at random according to the result of access exploration.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: the side-play amount relevant information issuing according to network equipment by M2M terminal, obtain the side-play amount that the access window of M2M terminal and the access window of H2H terminal differ, side-play amount be H2H terminal access window duration [1/2, 3/4], M2M terminal is avoided H2H terminal access window and is disturbed stronger first half section like this, make full use of H2H terminal access window and disturb the weak second half section, thereby reduce H2H terminal and the M2M terminal access collision probability on the same access window of same carrier wave, improve terminal access performance.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below embodiment of the present invention is described further in detail.
Embodiment 1
The present embodiment provides a kind of method of random access, and for M2M terminal, the method comprises:
101a:M2M terminal receives the access parameter that network equipment issues, and access parameter comprises side-play amount relevant information;
Wherein, side-play amount relevant information is the duration of the access window of the side-play amount that differs of the access window of M2M terminal and the access window of H2H terminal or H2H terminal;
102a:M2M terminal, according to side-play amount relevant information, is obtained the side-play amount that the access window of M2M terminal and the access window of H2H terminal differ, and side-play amount is [1/2,3/4] of the access window duration of H2H terminal;
Wherein, [1/2,3/4] refer to, including 1/2 and 3/4 1/2 and 3/4 between arbitrary value, corresponding, [1/2 of the access window duration of H2H terminal, 3/4] refer to, including the access window duration of H2H terminal 1/2 and 3/4 1/2 and 3/4 between arbitrary value, for example, 5/8 of the access window duration of H2H terminal.The implication of [1/2,3/4] that relates to the access window duration of H2H terminal in other embodiments of the invention is all identical with the present embodiment, and other embodiment repeat no more.
103a:M2M terminal accesses at random according to side-play amount.
For network equipment, the method comprises:
101b: network equipment arranges the side-play amount that the access window of M2M terminal and the access window of Human To Human H2H terminal differ, and side-play amount is [1/2,3/4] of the access window duration of H2H terminal;
102b: network equipment is carried at side-play amount in access parameter and is handed down to M2M terminal, makes M2M terminal access at random according to side-play amount.
At present, the side-play amount of the access window of H2H terminal is 0/4/8/12 time slot, and because the representative value of access window duration is 64 time slots, therefore the starting point of the access window of H2H terminal is mainly positioned at the first half section of access window duration.
The side-play amount relevant information that the present embodiment issues according to network equipment by M2M terminal, obtain the side-play amount that the access window of M2M terminal and the access window of Human To Human H2H terminal differ, side-play amount be H2H terminal access window duration [1/2,3/4], M2M terminal is avoided H2H terminal access window and is disturbed stronger first half section like this, make full use of H2H terminal access window and disturb the weak second half section, thereby reduce H2H terminal and the M2M terminal access collision probability on the same access window of same carrier wave, improved terminal access performance.
Embodiment 2
The present embodiment is to improve on the basis of embodiment 1, and the present embodiment provides a kind of method of random access, comprising:
201: HRPD (High Rate Packet Data, the high speed packet data agreement) agreement of supporting according to H2H terminal, the disturbed condition of analysis H2H terminal access window;
For the H2H terminal of only supporting HRPD0 version, to use Default (acquiescence) access channel MAC agreement, wherein, the pilot portion of probe accounts for 32 time slots, in the time that the data division of probe is less than or equal to MAC bag size (232 bit), MAC wraps in 16 time slots and can transmit completely, and probe accounts for 48 time slots, the duration representative value of access window is 64 time slots, also surplus 16 time slots of H2H terminal access window.In the time that the data division of probe is greater than 232 bits and is less than 232 × 2 bit, MAC wraps in 16 time slot × 2 and can transmit completely, and now probe takes 64 time slots of H2H terminal access window.
For the highest H2H terminal of supporting HRPD A version, can use Enhanced (enhancing) access channel MAC agreement, wherein, the pilot portion of probe accounts for 4 time slots or 16 time slots, in the time that the data division of probe is greater than 232 bits and is less than 488 bit, can transmit complete at 16 time slots.Therefore, the pilot tone of corresponding different length, probe accounts for respectively 20 time slots or 32 time slots, also surplus 44 time slots or 32 time slots of H2H terminal access window.
In sum, from the probability distribution of disturbing, rear 1/2 of H2H terminal access window duration is [1/2,1] be [0 with respect to front 1/2,1/2) interference is lower, H2H terminal access window duration rear 1/4 [3/4,1] with respect to rear 1/2 to rear 1/4 part [1/2,3/4) interference lower.
202: network equipment, according to the disturbed condition of H2H terminal access window, is determined the side-play amount that the access window of M2M terminal and the access window of H2H terminal differ, and this side-play amount is [1/2,3/4] of the access window duration of H2H terminal;
203: network equipment issues access parameter to M2M terminal, and this access parameter comprises side-play amount relevant information;
The duration of the side-play amount that wherein, side-play amount relevant information can differ for the access window of M2M terminal and the access window of H2H terminal or the access window of H2H terminal.
204:M2M terminal receives the access parameter that network equipment issues, the side-play amount relevant information of carrying according to it is obtained the side-play amount that the access window of M2M terminal and the access window of H2H terminal differ, this side-play amount is [1/2,3/4] of the access window duration of H2H terminal;
According to the difference of side-play amount relevant information, this step specifically has two kinds of side-play amount obtain manners:
The first is the side-play amount that M2M terminal receives that network equipment is determined and the access window of M2M terminal that issues and the access window of H2H terminal differ, and this side-play amount is [1/2,3/4] of the access window duration of H2H terminal.
The second is the duration of the access window of the H2H terminal that issues according to network equipment of M2M terminal, determines the side-play amount that probe is corresponding.Concrete,
M2M terminal, according to Offset=M/N × [Duration-(Duration Mod N)], is determined the side-play amount that probe is corresponding,
Wherein, Offset represents the side-play amount that the probe of M2M terminal is corresponding, and Duration represents the duration of the access window of H2H terminal, and unit is time slot, and Mod represents modulo operation, and M/N belongs to [1/2,3/4], and N is 2 n power, and M, N and n are positive integers.
According to above-mentioned formula, side-play amount is that 3/4 formula of access window is Offset=3/4 × [Duration-(Duration Mod4)], and side-play amount is that 1/2 formula of access window is Offset=1/2 × [Duration-(Duration Mod2)].
205:M2M terminal accesses at random according to this side-play amount; Concrete,
205a:M2M terminal is selected an access window, sends probe carry out access exploration taking side-play amount as starting point at access window;
205b:M2M terminal accesses at random according to the result of access exploration;
Concrete, when the result of access exploration is not when bumping, M2M terminal accesses taking side-play amount as starting point at random accessing window; When the result of access exploration is when bumping, re-execute step 204a until access successfully.
The side-play amount relevant information that the present embodiment issues according to network equipment by M2M terminal, obtain the side-play amount that the access window of M2M terminal and the access window of Human To Human H2H terminal differ, side-play amount be H2H terminal access window duration [1/2,3/4], M2M terminal is avoided H2H terminal access window and is disturbed stronger first half section like this, make full use of H2H terminal access window and disturb the weak second half section, thereby reduce H2H terminal and the M2M terminal access collision probability on the same access window of same carrier wave, improved terminal access performance.
Embodiment 3
The present embodiment provides a kind of M2M terminal, comprising: receiver module 301, acquisition module 302 and access module 303;
Receiver module 301, the access parameter issuing for receiving network equipment, access parameter comprises side-play amount relevant information;
Acquisition module 302, for according to side-play amount relevant information, obtains the side-play amount that the access window of M2M terminal and the access window of Human To Human H2H terminal differ, and side-play amount is [1/2,3/4] of the access window duration of H2H terminal;
Access module 303, for accessing at random according to side-play amount.
Wherein, side-play amount relevant information is the duration of the access window of side-play amount or H2H terminal;
In the time that side-play amount relevant information is the duration of access window of H2H terminal, acquisition module 302, specifically for
According to Offset=M/N × [Duration-(Duration Mod N)], determine the side-play amount that probe is corresponding,
Wherein, Offset represents the side-play amount that the probe of M2M terminal is corresponding, and Duration represents the duration of the access window of H2H terminal, and unit is time slot, and Mod represents modulo operation, and M/N belongs to [1/2,3/4], and N is 2 n power, and M, N and n are positive integers.
Wherein, access module 303 comprises: sound out unit 303a and access unit 303b;
Sound out unit 303a, for selecting an access window, send probe taking side-play amount as starting point at access window and carry out access exploration;
Access unit 303b, accesses at random for the result according to access exploration.
Wherein, access unit 303b, specifically for
When the result of access exploration is not when bumping, M2M terminal accesses taking side-play amount as starting point at random at access window; When the result of access exploration is when bumping, re-execute the function of souning out unit 303a.
M2M terminal and embodiment of the method that the present embodiment relates to belong to same design, and its specific implementation process refers to embodiment of the method, repeats no more here.
The side-play amount relevant information that the present embodiment issues according to network equipment by M2M terminal, obtain the side-play amount that the access window of M2M terminal and the access window of Human To Human H2H terminal differ, side-play amount be H2H terminal access window duration [1/2,3/4], M2M terminal is avoided H2H terminal access window and is disturbed stronger first half section like this, make full use of H2H terminal access window and disturb the weak second half section, thereby reduce H2H terminal and the M2M terminal access collision probability on the same access window of same carrier wave, improved terminal access performance.
Embodiment 4
The present embodiment provides a kind of network equipment, comprising: module 401 and sending module 402 are set;
Module 401 is set, the side-play amount differing for the access window of M2M terminal and the access window of H2H terminal are set, side-play amount is [1/2,3/4] of the access window duration of H2H terminal;
Wherein, network equipment, according to the disturbed condition of H2H terminal access window, is determined the side-play amount that the access window of M2M terminal and the access window of H2H terminal differ.The disturbed condition of H2H terminal access window refers to step 201a, repeats no more here.
Sending module 402, is handed down to M2M terminal for side-play amount being carried to access parameter, and M2M terminal is accessed at random according to side-play amount.
The network equipment that the present embodiment relates to and embodiment of the method belong to same design, and its specific implementation process refers to embodiment of the method, repeats no more here.
The present embodiment arranges by network equipment the side-play amount that the access window of M2M terminal and the access window of H2H terminal differ, side-play amount be H2H terminal access window duration [1/2, 3/4], side-play amount is carried at and in access parameter, is handed down to M2M terminal, M2M terminal is accessed at random according to side-play amount, M2M terminal is avoided H2H terminal access window and is disturbed stronger first half section like this, make full use of H2H terminal access window and disturb the weak second half section, thereby reduce H2H terminal and the M2M terminal access collision probability on the same access window of same carrier wave, improve terminal access performance.
Embodiment 5
The present embodiment provides a kind of system of random access, comprising: network equipment 501 and M2M terminal 502;
Network equipment 501, for issuing access parameter to M2M terminal 502, access parameter comprises side-play amount relevant information;
M2M terminal 502, for according to side-play amount relevant information, obtain the side-play amount that the access window of M2M terminal and the access window of Human To Human H2H terminal differ, side-play amount be H2H terminal access window duration [1/2,3/4], access at random according to side-play amount.
Wherein, in the time that side-play amount relevant information is side-play amount, network equipment 501, the side-play amount differing specifically for the access window of M2M terminal and the access window of Human To Human H2H terminal are set, side-play amount be H2H terminal access window duration [1/2,3/4], side-play amount is carried at and in access parameter, is handed down to M2M terminal 502.
Wherein, in the time that side-play amount relevant information is the duration of access window of H2H terminal, M2M terminal 502 comprises acquisition module 502a and access module 502b;
Acquisition module 502a, specifically for according to Offset=M/N × [Duration-(Duration Mod N)], determines the side-play amount that probe is corresponding,
Wherein, Offset represents the side-play amount that the probe of M2M terminal is corresponding, and Duration represents the duration of the access window of H2H terminal, and unit is time slot, and Mod represents modulo operation, and M/N belongs to [1/2,3/4], and N is 2 n power, and M, N and n are positive integers;
Access module 502b, specifically for selecting an access window, sends probe taking side-play amount as starting point at access window and carries out access exploration, accesses at random according to the result of access exploration.
Related network equipment and the M2M terminal of system that the present embodiment provides, respectively with embodiment of the method in network equipment and M2M terminal belong to same design, its specific implementation process refers to embodiment of the method, repeats no more here.
The present embodiment arranges by network equipment the side-play amount that the access window of M2M terminal and the access window of H2H terminal differ, side-play amount be H2H terminal access window duration [1/2, 3/4], side-play amount is carried at and in access parameter, is handed down to M2M terminal, M2M terminal accesses at random according to side-play amount, M2M terminal is avoided H2H terminal access window and is disturbed stronger first half section like this, make full use of H2H terminal access window and disturb the weak second half section, thereby reduce H2H terminal and the M2M terminal access collision probability on the same access window of same carrier wave, improve terminal access performance.
All or part of content in the technical scheme that above embodiment provides can realize by software programming, and its software program is stored in the storage medium can read, storage medium for example: hard disk, CD or floppy disk in computer.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a method for random access, is characterized in that, described method comprises:
Machine receives to machine M2M terminal the access parameter that network equipment issues, and described access parameter comprises side-play amount relevant information; Described side-play amount relevant information is the duration of the access window of described side-play amount or H2H terminal;
Described M2M terminal, according to described side-play amount relevant information, is obtained the side-play amount that the access window of described M2M terminal and the access window of Human To Human H2H terminal differ, and described side-play amount is [1/2,3/4] of the access window duration of described H2H terminal;
Wherein, in the time of the duration of the described side-play amount relevant information access window that is described H2H terminal, described M2M terminal, according to described side-play amount relevant information, is obtained the side-play amount that the access window of described M2M terminal and the access window of Human To Human H2H terminal differ, and comprising:
Described M2M terminal, according to Offset=M/N × [Duration-(Duration Mod N)], is determined the side-play amount that probe is corresponding,
Wherein, Offset represents the side-play amount that the probe of M2M terminal is corresponding, and Duration represents the duration of the access window of described H2H terminal, and unit is time slot, and Mod represents modulo operation, and M/N belongs to [1/2,3/4], and N is 2 n power, and M, N and n are positive integers;
Described M2M terminal accesses at random according to described side-play amount.
2. method according to claim 1, is characterized in that, described M2M terminal accesses at random according to described side-play amount, comprising:
Described M2M terminal is selected an access window, sends probe carry out access exploration taking described side-play amount as starting point at described access window;
Described M2M terminal accesses at random according to the result of access exploration.
3. method according to claim 2, is characterized in that, described M2M terminal accesses at random according to the result of access exploration, comprising:
When the result of access exploration is not when bumping, described M2M terminal accesses taking described side-play amount as starting point at random at described access window;
When the result of access exploration is when bumping, re-execute described M2M terminal and select an access window, send probe and carry out the step of access exploration at described access window taking described side-play amount as starting point.
4. a M2M terminal, is characterized in that, described M2M terminal comprises: receiver module, acquisition module and access module;
Described receiver module, the access parameter issuing for receiving network equipment, described access parameter comprises side-play amount relevant information; Described side-play amount relevant information is the duration of the access window of described side-play amount or H2H terminal;
Described acquisition module, for according to described side-play amount relevant information, obtains the side-play amount that the access window of described M2M terminal and the access window of Human To Human H2H terminal differ, and described side-play amount is [1/2,3/4] of the access window duration of described H2H terminal;
Wherein, in the time of the duration of the described side-play amount relevant information access window that is described H2H terminal, described acquisition module, specifically for
According to Offset=M/N × [Duration-(Duration Mod N)], determine the side-play amount that probe is corresponding,
Wherein, Offset represents the side-play amount that the probe of M2M terminal is corresponding, and Duration represents the duration of the access window of described H2H terminal, and unit is time slot, and Mod represents modulo operation, and M/N belongs to [1/2,3/4], and N is 2 n power, and M, N and n are positive integers;
Described access module, for accessing at random according to described side-play amount.
5. M2M terminal according to claim 4, is characterized in that, described access module comprises: sound out unit and access unit;
Described exploration unit, for selecting an access window, sends probe taking described side-play amount as starting point at described access window and carries out access exploration;
Described access unit, accesses at random for the result according to access exploration.
6. M2M terminal according to claim 5, is characterized in that, described access unit, specifically for
When the result of access exploration is not when bumping, described M2M terminal accesses taking described side-play amount as starting point at random at described access window;
When the result of access exploration is when bumping, re-execute the function of described exploration unit.
7. a method for random access, is characterized in that, described method comprises:
Network equipment arranges the side-play amount that the access window of M2M terminal and the access window of Human To Human H2H terminal differ, and described side-play amount is [1/2,3/4] of the access window duration of described H2H terminal;
Described network equipment issues access parameter to described M2M terminal, and described access parameter comprises side-play amount relevant information;
Wherein, the duration of the side-play amount that the access window that described side-play amount relevant information is described M2M terminal and the access window of H2H terminal differ or the access window of H2H terminal, make the duration of the access window of the H2H terminal that described M2M terminal issues according to described network equipment, determine the side-play amount that probe is corresponding, described M2M terminal is accessed at random according to described side-play amount;
Wherein, in the time of the duration of the described side-play amount relevant information access window that is described H2H terminal, make described M2M terminal according to described side-play amount relevant information, obtain the side-play amount that the access window of described M2M terminal and the access window of Human To Human H2H terminal differ, comprising:
Described M2M terminal, according to Offset=M/N × [Duration-(Duration Mod N)], is determined the side-play amount that probe is corresponding,
Wherein, Offset represents the side-play amount that the probe of M2M terminal is corresponding, and Duration represents the duration of the access window of described H2H terminal, and unit is time slot, and Mod represents modulo operation, and M/N belongs to [1/2,3/4], and N is 2 n power, and M, N and n are positive integers.
8. a network equipment, is characterized in that, described network equipment comprises: module and sending module are set;
The described module that arranges, the side-play amount differing for the access window of M2M terminal and the access window of Human To Human H2H terminal are set, described side-play amount is [1/2,3/4] of the access window duration of described H2H terminal;
Described sending module, for sending out access parameter to described M2M terminal, described access parameter comprises side-play amount relevant information;
Wherein, the duration of the side-play amount that the access window that described side-play amount relevant information is described M2M terminal and the access window of H2H terminal differ or the access window of H2H terminal, make the duration of the access window of the H2H terminal that described M2M terminal issues according to described network equipment, determine the side-play amount that probe is corresponding, described M2M terminal is accessed at random according to described side-play amount;
Wherein, in the time of the duration of the described side-play amount relevant information access window that is described H2H terminal, make described M2M terminal according to described side-play amount relevant information, obtain the side-play amount that the access window of described M2M terminal and the access window of Human To Human H2H terminal differ, comprising:
Described M2M terminal, according to Offset=M/N × [Duration-(Duration Mod N)], is determined the side-play amount that probe is corresponding,
Wherein, Offset represents the side-play amount that the probe of M2M terminal is corresponding, and Duration represents the duration of the access window of described H2H terminal, and unit is time slot, and Mod represents modulo operation, and M/N belongs to [1/2,3/4], and N is 2 n power, and M, N and n are positive integers.
9. a system for random access, is characterized in that, described system comprises: network equipment and M2M terminal;
Described network equipment, for issuing access parameter to described M2M terminal, described access parameter comprises side-play amount relevant information;
Described M2M terminal, be used for according to described side-play amount relevant information, obtain the side-play amount that the access window of described M2M terminal and the access window of Human To Human H2H terminal differ, described side-play amount be described H2H terminal access window duration [1/2,3/4], access at random according to described side-play amount;
Wherein, in the time of the duration of the described side-play amount relevant information access window that is described H2H terminal, described M2M terminal comprises acquisition module and access module;
Described acquisition module, specifically for
According to Offset=M/N × [Duration-(Duration Mod N)], determine the side-play amount that probe is corresponding,
Wherein, Offset represents the side-play amount that the probe of M2M terminal is corresponding, and Duration represents the duration of the access window of described H2H terminal, and unit is time slot, and Mod represents modulo operation, and M/N belongs to [1/2,3/4], and N is 2 n power, and M, N and n are positive integers;
Described access module, specifically for
Select an access window, send probe taking described side-play amount as starting point at described access window and carry out access exploration, access at random according to the result of access exploration.
10. system according to claim 9, is characterized in that, in the time that described side-play amount relevant information is described side-play amount,
Described network equipment, the side-play amount differing specifically for the access window of M2M terminal and the access window of Human To Human H2H terminal are set, described side-play amount be described H2H terminal access window duration [1/2,3/4], described side-play amount is carried at and in access parameter, is handed down to described M2M terminal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110007069.3A CN102595632B (en) | 2011-01-13 | 2011-01-13 | Method, system and device for random access |
| PCT/CN2011/082979 WO2012094927A1 (en) | 2011-01-13 | 2011-11-25 | Method, system and device for random access |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110007069.3A CN102595632B (en) | 2011-01-13 | 2011-01-13 | Method, system and device for random access |
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| CN102595632A CN102595632A (en) | 2012-07-18 |
| CN102595632B true CN102595632B (en) | 2014-10-08 |
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| CA3117499A1 (en) | 2018-10-26 | 2020-04-30 | Huawei Technologies Co., Ltd. | Channel access mechanism for random access channel in unlicensed spectrum |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101730136A (en) * | 2009-11-26 | 2010-06-09 | 中国电信股份有限公司 | Processing method and system for M2M terminal call |
| CN101742682A (en) * | 2008-11-12 | 2010-06-16 | 中兴通讯股份有限公司 | Random access method between terminal and base station in LTE system |
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| KR101582196B1 (en) * | 2009-04-29 | 2016-01-04 | 삼성전자 주식회사 | An apparatus and method for automatic optimization of RACH preambles/resources in a wireless system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742682A (en) * | 2008-11-12 | 2010-06-16 | 中兴通讯股份有限公司 | Random access method between terminal and base station in LTE system |
| CN101730136A (en) * | 2009-11-26 | 2010-06-09 | 中国电信股份有限公司 | Processing method and system for M2M terminal call |
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