CN101132621A - Random access method and system thereof and access resource allocation device - Google Patents
Random access method and system thereof and access resource allocation device Download PDFInfo
- Publication number
- CN101132621A CN101132621A CNA2006101151023A CN200610115102A CN101132621A CN 101132621 A CN101132621 A CN 101132621A CN A2006101151023 A CNA2006101151023 A CN A2006101151023A CN 200610115102 A CN200610115102 A CN 200610115102A CN 101132621 A CN101132621 A CN 101132621A
- Authority
- CN
- China
- Prior art keywords
- access
- resource
- calling user
- user terminal
- response calling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
This invention discloses a random access method, a system and a resource distribution device, in which, the method includes: 1, an access network divides an access resource in a set of access resource into multiple resource groups and preserves part of access resources from the selected one or many access resource groups according to the needs of users for response paging user terminals accessing the network and sends the packet parameter and preservation imformation to all UE, 2, the response paging UE select one access resource group and select access resource to access the network, initial user terminals select access resources out of the preserved one to access the network.
Description
Technical field
The present invention relates to the communications field, relate more specifically to a kind of accidental access method and system and access resource allocation device.
Background technology
In wireless communication system, because Reverse Access Channel is single shared channel, and each terminal use can initiate the process that inserts randomly according to the wish of oneself, so when two or more users send access information simultaneously, the signal of air interface can be obscured, thereby can cause correctly demodulation originating terminal signal of receiving terminal, this just cries the collision that inserts at random.Inserting at random is the process of initiating to insert in the probe mode.In order to reduce collision, can modulate with mutually orthogonal code character the content of probe, and inserting at random with different access sequence (can be orthogonal code) modulation of different user is even the random accessing message of Chuan Songing also can be received proper really reception so simultaneously.But when different users adopts same access sequence modulation simultaneously, then can cause the phase mutual interference, thereby receiving terminal can't solve useful information.Therefore, in order to improve the performance that inserts at random, need avoid the user to select same access sequence for use at same delivery time as far as possible.
In wireless communication system, Client-initiated has access to different cause values at random, wherein most importantly responds the information of paging and the information that the user starts fully.Paging is the user in the customer call wireless communication system of far-end, promptly is that the user in the wireless communication system does called.Because far-end is set up to the link of network side, therefore requiring higher than the user's initial call under the equal conditions in the requirement of access delay.
Initiate the different cause values that insert at random according to the user, the conflict that different users can be adopted simultaneously same access sequence modulation to cause is divided into conflict between the user who respond paging, respond conflicting between calling user and the initial call user, the conflict between the initial call user.
The generating mode of access sequence has a lot, such as Walsh sequence, Golay sequence etc.The Walsh sign indicating number be one group by 0,1 or 1 ,-1 sign indicating number sequence of forming, length is 2 n power.In case the dimension of Walsh sign indicating number determines that the combination of all Walsh sign indicating numbers is promptly determined.Walsh sign indicating numbers such as 1024 dimensions have 1024 kinds of different sign indicating number sequences, and the length of each sequence is 1024 also, can be described as 1024 code spaces, quadrature all between per two sign indicating number sequences.
In the access at random of LI(link interface) evolution aloft (Airlink interface evolution is called for short AIE), used the Walsh sign indicating number of 1024 dimensions that the content of access probe is modulated.The call number of 1024 code spaces is 0-1023, wherein call number be 0-17 kept for that Active Set do to switch, power control and time adjustment use.Call number is that leaving for of 18-1023 (totally 1006) accesses terminal that (Access Terminal uses when AT) sending out access probe.The access probe that sends comprises the response paging and accesses terminal initiates the probe of cause values such as initial call.
When forward direction, each superframe comprises a Preamble and 24 physical frames, per two superframes can send the paging bag in the corresponding resource blocks in the F-DCH of Preamble and first physical frame, if a beep-page message is only arranged, then on the pBCH1 of superframe preamble, send, if eight beep-page messages are arranged, then article one beep-page message sends on the pBCH1 of superframe preamble, and 2-8 bar beep-page message sends (can comprise 8 beep-page messages in the paging bag at most) in the Resource Block of F-DCH.When reverse, each superframe intermediate reach has four physical frames and allows to send random access probe, as shown in Figure 1.
The content of beep-page message in the F-DCH piece seen shown in Figure 2.The length of NumATIRecords field is 5 bits, represents to have in this message what users' beep-page message; The number of times that two fields of ATIRecord afterwards and OpenConnectionRequired occur is exactly the value of NumATIRecords parameter, promptly have these two fields of paging of what users how many times just to occur, and sequence arrangement is gone down.
All select some access sequences because above-mentioned technology is all users that will initiate to insert at random according to same algorithm, therefore be difficult to avoid the user when the response paging and other user initiating the beginning identical access sequence of selection and situation about bumping when exhaling; Also be difficult to avoid the user when the response paging and other user identical access sequence of selection and situation about bumping when the response paging, as shown in Figure 3.Like this could connecting system to user's probe that can need to send out a plurality of of response paging, increase the time delay that responds paging, influence the performance of paging.
The limitation that access sequence distributes:
In the above-mentioned technology, user's access sequence is divided into 9 groups, the quantity of the access sequence that the row of 1 to 9 sequence number of the partitionNsize of each row of following form comprise corresponding to these nine groups, wherein the value of S1, S2 and S3 is by the little form definition on the right, and floor wherein (NACMPNumSequence/18) is divided by 18 round numbers downwards then to constant NACMPNumSequence.Constant NACMPNumSequence generally is 1024 by protocol definition.Provide in the prior art that multiple group technology is selective to adapt to different scenes, each provisional capital of following table is a kind of distribution method, generally therefrom selects a kind of (being delegation) method of salary distribution as nine groups in a sub-district.
The quantity of each group is by S1, S2 and S3 definition, and the index of the access sequence of concrete correspondence is then generated by other algorithm, can be sequence arrangement, also can be other permutation algorithm.It in the prior art sequence arrangement.
When each terminal sends page response after inserting and responding paging, channel quality and requestlevel (general quantity corresponding to metadata cache) according to self select a group from 9 groups, and then select an access sequence to be used for this random access probe from this group at random.
| PilotLevel | RequestLevel | ||
| 1 | 2 | 3 | |
| 1 | 1 | 2 | 3 |
| 2 | 4 | 5 | 6 |
| 3 | 7 | 8 | 9 |
Above-mentioned system of selection can be by access sequence the channel quality of selection forward direction that the user is listened to and user's cache information report the base station, simultaneously because each user's channel quality and cache information can present certain even distribution characteristics, so also avoided the probability of collision preferably.At some special situations, the base station also can meet the different needs by selecting different packet modes.
But the shortcoming of this group technology is exactly for the response calling user, requestlevel is 0 basically, therefore can concentrate and select requestlevel is 1 row, can increase the user's (response calling user and audio call user and buffer memory user seldom) who selects these row collision probability so greatly, must select a kind of rational method of salary distribution abundant with the resource that guarantees first row.Will cause packet mode real available in the above-mentioned grouping scheme fewer like this, have only 00101 to meet the demands basically.Lost and defined the meaning that a lot of scenes exist.
The user who responds paging simultaneously and user's collision probability of initial call are also than higher.
Summary of the invention
At above-mentioned one or more problems, the present invention is intended to guarantee the access sequence collision that the access sequence of the probe use of response paging can use with the user of other initial call scarcely by a kind of Resource Allocation Formula efficiently, also can collide with the access sequence that other user who responds paging uses scarcely, improved systematic function.The present invention proposes following technical scheme:
According to an aspect of the present invention, a kind of accidental access method has been proposed, may further comprise the steps: S402, access network is divided into a plurality of access-in resource groups with the access-in resource in the access-in resource set, from a plurality of access-in resource groups, select one or more access-in resource groups, and reserve a part of access-in resource respectively according to the information that the terminal needs carry and be used for one or more response calling user accessing terminal to network, and packet parameters and obligate information be sent to all user terminals, wherein obligate information comprises the quantity information that needs are reserved; And S404, information that response calling user terminal is carried according to the terminal needs and/or packet parameters and obligate information select access-in resource to come access network from a part of access-in resource of reserving, select access-in resource to come access network initial call user terminal other access-in resources beyond a part of access-in resource of reserving.Wherein, access network can only be selected a group of access resource from a plurality of access-in resource groups, reserves a part of access-in resource and be used to respond the calling user accessing terminal to network in this group access resource.In agreement, be defined as the rule and the method for response calling user terminal reserved resource.
Carry out the reservation of access-in resource in the following manner: dynamically reserve, a part of access-in resource of reservation is used for current response calling user terminal in reserving the term of validity, and current response calling user terminal is this reserved resource corresponding response calling user; And static reservations, a part of access-in resource of reservation is used to respond the calling user terminal always.
According to following at least a information the access-in resource set is divided into a plurality of access-in resource groups: channel quality, service quality and metadata cache amount.The information that terminal need be carried comprises following at least a: channel quality, service quality and metadata cache amount.Access network is sent to all terminals by following at least a mode with packet parameters and obligate information: broadcast by the mode of system message and put, and the configuring negotiation mode is transmitted.
Step S402 may further comprise the steps: S4022a, and access network is divided into a plurality of access-in resource groups with the access-in resource in the access-in resource set; S4024a, access network is selected one or more access-in resource groups according to the information that the terminal needs carry from a plurality of access-in resource groups, and in selected one or more access-in resource groups, reserve a part of access-in resource respectively, be used to respond the calling user accessing terminal to network, packet parameters and obligate information are sent to all user terminals.Select the access-in resource access network in initial call user terminal other access-in resources from the access-in resource set.Wherein, the quantity of a part of access-in resource of reservation is more than or equal to the quantity of response calling user terminal.Packet parameters and obligate information that user terminal can access network identification sends.
Step S402 may further comprise the steps: S4022b is divided into a plurality of access-in resource groups with the access-in resource in the access-in resource set; S4024b, from a plurality of access-in resource groups, select one or more access-in resource groups, and reserve a part of access-in resource respectively and be used to respond the calling user accessing terminal to network in selected one or more access-in resource groups, the access-in resource quantity of reservation is more than or equal to the quantity of response calling user terminal; And S4026b, from access-in resource set, deduct a part of access-in resource of reservation.
Responding the calling user terminal does not before the deadline still have under the situation of access, selects access-in resource continuation access network response calling user terminal other access-in resources beyond a part of access-in resource of reserving.
Responding the calling user terminal does not before the deadline still have under the situation of access, from selected one or more access-in resource groups, dynamically reserve the access-in resource of quantity respectively in addition, be used to respond the calling user terminal and continue access network more than or equal to response calling user terminal quantity.
Access-in resource comprises: be used to respond the access sequence set that the access probe of calling user terminal or initial call user terminal is modulated.
According to a further aspect in the invention, provide a kind of random access system, having comprised: one or more response calling user terminals and/or one or more initial call user terminal; Access resource allocation device, be used for the access-in resource of access-in resource set is divided into a plurality of access-in resource groups, and the information of carrying according to the terminal needs respectively in one or more access-in resource groups of selecting from a plurality of access-in resource groups reserves a part of access-in resource and is used for one or more response calling user accessing terminal to network, and packet parameters and obligate information are sent to all terminals; Wherein, response calling user terminal is according to packet parameters and obligate information is selected an access-in resource group and select access-in resource to come access network from the access-in resource group, selects access-in resource to come access network initial call user terminal other access-in resources beyond a part of access-in resource of reserving.Wherein, access resource allocation device can only be selected a group of access resource from a plurality of access-in resource groups, reserves a part of access-in resource and be used to respond the calling user accessing terminal to network in this group access resource.
Carry out the reservation of access-in resource in the following manner: dynamically reserve: a part of access-in resource of reservation is used for current response calling user terminal in reserving the term of validity, current response calling user terminal is this reserved resource corresponding response calling user; And static reservations, a part of access-in resource of reservation is used to respond the calling user terminal always.
According to following at least a information the access-in resource set is divided into a plurality of access-in resource groups: channel quality, service quality and metadata cache amount.The information that terminal is carried comprises following at least a: channel quality, service quality and metadata cache amount.Access network is sent to all terminals by following at least a mode with packet parameters and obligate information: broadcast by the mode of system message and put, and the configuring negotiation mode is transmitted.
Being pressed into resource allocation device comprises: access-in resource is divided module, is used for the access-in resource of access-in resource set is divided into a plurality of access-in resource groups; And the first access-in resource distribution module, the information that is used for carrying according to the terminal needs is selected one or more access-in resource groups from a plurality of access-in resource groups, and in selected one or more access-in resource groups, reserve quantity respectively and be used to respond the calling user accessing terminal to network, and described packet parameters and obligate information are sent to all user terminals more than or equal to the access-in resource that responds the calling user terminal quantity.Select the access-in resource access network in other access-in resources beyond a part of access-in resource that the initial call user terminal is reserved from the access-in resource set.
Access resource allocation device also comprises: the second access-in resource distribution module, the information that is used for carrying according to the terminal needs is selected one or more access-in resource groups from a plurality of access-in resource groups, and in selected one or more access-in resource groups, reserve a part of access-in resource respectively and be used to respond the calling user terminal, the quantity of a part of access-in resource of reserving is more than or equal to the quantity of response calling user terminal, from the access-in resource set, deduct the access-in resource of reservation, and described packet parameters and obligate information are sent to all user terminals.
Responding the calling user terminal does not before the deadline still have under the situation of access, selects access-in resource to be used to respond the calling user terminal the first and/or second access-in resource distribution module other access-in resources beyond a part of access-in resource of reserving and continues access network.
Responding the calling user terminal does not before the deadline still have under the situation of access, first and/or the second access-in resource distribution module is dynamically reserved the access-in resource of quantity more than or equal to response calling user terminal quantity respectively in addition from selected one or more access-in resource groups, be used to respond the calling user terminal and continue access network.
Access-in resource comprises: be used to respond the access sequence set that the access probe of calling user terminal or initial call user terminal is modulated.
According to a further aspect in the invention, provide a kind of access resource allocation device, having comprised: access-in resource is divided module, and the access-in resource in the access-in resource set is divided into a plurality of access-in resource groups; And access-in resource distribution module, the information that is used for carrying according to the terminal needs is selected one or more access-in resource groups from a plurality of access-in resource groups, and in one or more access-in resource groups, reserve a part of access-in resource respectively, be used for one or more response calling user accessing terminal to network, and packet parameters and obligate information are sent to all terminals.Wherein, the access-in resource distribution module can only be selected a group of access resource from a plurality of access-in resource groups, reserves a part of access-in resource and be used to respond the calling user accessing terminal to network in this group access resource.
Carry out the reservation of access-in resource in the following manner: dynamically reserve, a part of access-in resource of reservation is used for current response calling user terminal in reserving the term of validity, and current response calling user terminal is this reserved resource corresponding response calling user; And static reservations, a part of access-in resource of reservation is used to respond the calling user terminal always.
According to following at least a information the access-in resource set is divided into a plurality of access-in resource groups: channel quality, service quality and metadata cache amount.The information that terminal is carried comprises following at least a: channel quality, service quality and metadata cache amount.Access network is sent to all terminals by following at least a mode with packet parameters and obligate information: broadcast by the mode of system message and put, and the configuring negotiation mode is transmitted.
The information that the access-in resource distribution module is carried according to the terminal needs is reserved the access-in resource of quantity more than or equal to response calling user terminal quantity respectively in selected one or more access-in resource groups, be used to respond the calling user accessing terminal to network.Select the access-in resource access network in initial call user terminal other access-in resources from the access-in resource set.
The access-in resource distribution module is reserved a part of access-in resource respectively in addition in selected one or more access-in resource groups, the quantity of a part of access-in resource of reserving is more than or equal to the quantity of response calling user terminal, and the access-in resource distribution module deducts the access-in resource of reservation from the access-in resource set.
Responding the calling user terminal does not before the deadline still have under the situation of access, selects access-in resource access-in resource distribution module other access-in resources beyond a part of access-in resource of reserving, is used to respond the calling user terminal and continues access network.
Responding the calling user terminal does not before the deadline still have under the situation of access, the access-in resource distribution module is dynamically reserved the access-in resource of quantity more than or equal to response calling user terminal quantity respectively in addition from selected one or more access-in resource groups, be used to respond the calling user terminal and continue access network.
Access-in resource comprises: be used to respond the access sequence set that the access probe of calling user terminal or initial call user terminal is modulated.
The present invention is by allowing the call terminal user select unique access access sequence (can be orthogonal code), thereby can guarantee that the access sequence that uses with the user of other response paging in terminal use's access procedure is different, and it is different with the employed access sequence of other initial call user, can guarantee that the employed access sequence of user that responds paging can clash with the employed access sequence of other user scarcely, avoided between the user of response paging fully and the user of response paging and initial call user between select identical access sequence simultaneously for use and cause conflict, can effectively shorten the time delay that responds paging.Also significantly reduced simultaneously initial access user's collision probability.In the access sequence that carries, can carry simultaneously user's access parameters such as power information equally.And owing to the employed access sequence of response calling user can conflict scarcely, therefore the random back time of designing for fear of conflict in access mechanism at random can all be established short (being 0), and can each control section all allow the user who responds paging to send random access probe, therefore can further shorten the time delay of response paging.And because the response calling user can not collide with the access sequence that other user who initiates initial call uses, so comparatively speaking, the access sequence user of initial call can obtain more performance too.
Description of drawings
Fig. 1 is the schematic diagram that 802.20 superframe structure is shown;
Fig. 2 is the schematic diagram that the particular content of beep-page message is shown;
Fig. 3 illustrates between the response beep-page message of synchronization different user and the collision schematic diagram between response paging and the initial call message;
Fig. 4 is the flow chart that illustrates according to accidental access method of the present invention;
Fig. 5 is the detail flowchart that illustrates according to the S402 in the accidental access method of the present invention;
Fig. 6 is the another detail flowchart that illustrates according to the S402 in the accidental access method of the present invention;
Fig. 7 is the structural representation that illustrates according to random access system of the present invention; And
Fig. 8 is the structural representation that illustrates according to access resource allocation device of the present invention.
Embodiment
Describe embodiments of the invention below with reference to the accompanying drawings in detail.
With reference to shown in Figure 4, illustrate according to accidental access method of the present invention.This method may further comprise the steps: S402, access network is divided into a plurality of access-in resource groups with the access-in resource in the access-in resource set, from a plurality of access-in resource groups, select one or more access-in resource groups, and in selected one or more access-in resource groups, reserve a part of access-in resource respectively according to the information that the terminal needs carry and be used for one or more response calling user accessing terminal to network, and packet parameters and obligate information be sent to all user terminals, wherein obligate information comprises the quantity information of reservation; And S404, information that response calling user terminal is carried according to the terminal needs and/or packet parameters and obligate information select to select from a part of access-in resource of reserving access-in resource to come access network, select access-in resource to come access network initial call user terminal other access-in resources beyond a part of access-in resource of reserving.Wherein, access network can only be selected a group of access resource from a plurality of access-in resource groups, reserves a part of access-in resource and be used to respond the calling user accessing terminal to network in this group access resource.In agreement, be defined as the rule and the method for response calling user terminal reserved resource.
Carry out the reservation of access-in resource in the following manner: dynamically reserve, a part of access-in resource of reservation is used for current response calling user terminal in reserving the term of validity, and current response calling user terminal is this reserved resource corresponding response calling user; And static reservations, a part of access-in resource of reservation is used to respond the calling user terminal always.
According to following at least a information the access-in resource set is divided into a plurality of access-in resource groups: channel quality, service quality and metadata cache amount.The information that terminal need be carried comprises following at least a: channel quality, service quality and metadata cache amount.Access network is sent to all terminals by following at least a mode with packet parameters and obligate information: broadcast by the mode of system message and put, and the configuring negotiation mode is transmitted.
As shown in Figure 5, in above-mentioned accidental access method, step S402 can may further comprise the steps: S4022a, and access network is divided into a plurality of access-in resource groups with the access-in resource in the access-in resource set; S4024a, access network is selected one or more access-in resource groups according to the information that the terminal needs carry from a plurality of access-in resource groups, and in selected one or more access-in resource groups, reserve a part of access-in resource respectively and be used to respond the calling user accessing terminal to network, packet parameters and obligate information are sent to all user terminals.Select the access-in resource access network in initial call user terminal other access-in resources from the access-in resource set.Wherein, the quantity of a part of access-in resource of reservation is more than or equal to the quantity of response calling user terminal.
As shown in Figure 6, in above-mentioned accidental access method, step S402 can may further comprise the steps: S4022b is divided into a plurality of access-in resource groups with the access-in resource in the access-in resource set; S4024b, from a plurality of access-in resource groups, select one or more access-in resource groups, and reserve a part of access-in resource respectively and be used to respond the calling user accessing terminal to network in selected one or more access-in resource groups, the access-in resource quantity of reservation is more than or equal to the quantity of response calling user terminal; And S4026b, from access-in resource set, deduct a part of access-in resource of reservation, and described packet parameters and obligate information are sent to all user terminals.
Responding the calling user terminal does not before the deadline still have under the situation of access, selects access-in resource continuation access network response calling user terminal other access-in resources beyond a part of access-in resource of reserving.
Responding the calling user terminal does not before the deadline still have under the situation of access, from selected one or more access-in resource groups, dynamically reserve the access-in resource of quantity respectively in addition, be used to respond the calling user terminal and continue access network more than or equal to response calling user terminal quantity.
Access-in resource comprises: be used to respond the access sequence set that the access probe of calling user terminal or initial call user terminal is modulated.
With reference to figure 7, illustrate according to random access system of the present invention.This system comprises: one or more response calling user terminals and/or one or more initial call user terminal 704 to 708; Access resource allocation device 702, the access-in resource that the information that is used for carrying according to the terminal needs is gathered access-in resource is divided into a plurality of access-in resource groups, one or more access-in resource groups of from a plurality of access-in resource groups, selecting, and in described one or more access-in resource groups, reserve a part of access-in resource respectively and be used for one or more response calling user accessing terminal to network, and packet parameters and obligate information are sent to all terminals; Wherein, information that response calling user terminal is carried according to the terminal needs and/or packet parameters and obligate information select access-in resource to come access network from a part of access-in resource of reserving, select access-in resource to come access network initial call user terminal other access-in resources beyond a part of access-in resource of reserving.Wherein, access resource allocation device can only be selected a group of access resource from a plurality of access-in resource groups, reserves a part of access-in resource and be used to respond the calling user accessing terminal to network in this group access resource.
Carry out the reservation of access-in resource in the following manner: dynamically reserve: a part of access-in resource of reservation is used for current response calling user terminal in reserving the term of validity, current response calling user terminal is this reserved resource corresponding response calling user; And static reservations, a part of access-in resource of reservation is used to respond the calling user terminal always.
According to following at least a information the access-in resource set is divided into a plurality of access-in resource groups: channel quality, service quality and metadata cache amount.The information that terminal is carried comprises following at least a: channel quality, service quality and metadata cache amount.Access network is sent to all terminals by following at least a mode with packet parameters and obligate information: broadcast by the mode of system message and put, and the configuring negotiation mode is transmitted.
In above-mentioned random access system, access resource allocation device comprises: access-in resource is divided module 7022, is used for the access-in resource of access-in resource set is divided into a plurality of access-in resource groups; And the first access-in resource distribution module 7024, the information that is used for carrying according to the terminal needs is selected one or more access-in resource groups from a plurality of access-in resource groups, and in selected one or more access-in resource groups, reserve quantity respectively and be used to respond the calling user accessing terminal to network, and described packet parameters and obligate information are sent to all user terminals more than or equal to the access-in resource that responds the calling user terminal quantity.Select the access-in resource access network in other access-in resources beyond a part of access-in resource that the initial call user terminal is reserved from the access-in resource set.
In above-mentioned random access system, access resource allocation device can also comprise: the second access-in resource distribution module 7026, be used for selecting one or more access-in resource groups from a plurality of access-in resource groups, and in selected one or more access-in resource groups, reserve a part of access-in resource respectively and be used to respond the calling user terminal, the access-in resource quantity of reserving is more than or equal to the quantity of response calling user terminal, and deducts a part of access-in resource of reservation from the access-in resource set.
Responding the calling user terminal does not before the deadline still have under the situation of access, selects access-in resource to be used to respond the calling user terminal the first and/or second access-in resource distribution module other access-in resources beyond a part of access-in resource of reserving and continues access network.
Responding the calling user terminal does not before the deadline still have under the situation of access, first and/or the second access-in resource distribution module is dynamically reserved the access-in resource of quantity more than or equal to response calling user terminal quantity respectively in addition from selected one or more access-in resource groups, be used to respond the calling user terminal and continue access network.
Access-in resource comprises: be used to respond the access sequence set that the access probe of calling user terminal or initial call user terminal is modulated.
With reference to figure 8, illustrate according to access resource allocation device of the present invention.This distributor comprises: access-in resource is divided module 802, and the access-in resource in the access-in resource set is divided into a plurality of access-in resource groups; And access-in resource distribution module 804, the information that is used for carrying according to the terminal needs is selected one or more access-in resource groups from a plurality of access-in resource groups, and in one or more access-in resource groups, reserve a part of access-in resource respectively, be used for one or more response calling user accessing terminal to network, and packet parameters and obligate information are sent to all terminals.Wherein, access resource allocation device can only be selected a group of access resource from a plurality of access-in resource groups, reserves a part of access-in resource and be used to respond the calling user accessing terminal to network in this group access resource.
Carry out the reservation of access-in resource in the following manner: dynamically reserve: a part of access-in resource of reservation is used for current response calling user terminal in reserving the term of validity, current response calling user terminal is this reserved resource corresponding response calling user; And static reservations, a part of access-in resource of reservation is used to respond the calling user terminal always.
According to following at least a information the access-in resource set is divided into a plurality of access-in resource groups: channel quality, service quality and metadata cache amount.The information that terminal is carried comprises following at least a: channel quality, service quality and metadata cache amount.Access network is sent to all terminals by following at least a mode with packet parameters and obligate information: broadcast by the mode of system message and put, and the configuring negotiation mode is transmitted.
The information that the access-in resource distribution module is carried according to the terminal needs is reserved the access-in resource of quantity more than or equal to response calling user terminal quantity respectively in selected one or more access-in resource groups, be used to respond the calling user accessing terminal to network.Select the access-in resource access network in initial call user terminal other access-in resources from the access-in resource set.
The access-in resource distribution module is reserved a part of access-in resource respectively in addition in selected one or more access-in resource groups, the quantity of a part of access-in resource of reserving is more than or equal to the quantity of response calling user terminal, and the access-in resource distribution module deducts a part of access-in resource of reservation from the access-in resource set.
Responding the calling user terminal does not before the deadline still have under the situation of access, selects access-in resource access-in resource distribution module other access-in resources beyond a part of access-in resource of reserving, is used to respond the calling user terminal and continues access network.
Responding the calling user terminal does not before the deadline still have under the situation of access, the access-in resource distribution module is dynamically reserved the access-in resource of quantity more than or equal to response calling user terminal quantity respectively in addition from selected one or more access-in resource groups, be used to respond the calling user terminal and continue access network.
Access-in resource comprises: be used to respond the access sequence set that the access probe of calling user terminal or initial call user terminal is modulated.
Below, further combined with specific embodiment full implementation mode of the present invention is described.
Dynamically telling a part according to the quantity of calling user in all available access sequence resources uses for the user of special response paging.
Embodiment one
One have 8 pagings such as this, if at request strength grade (requestlevel) is that calling user can be selected access sequence according to the pilot frequency intensity grade (pilotLevel) of forward direction under the more situation of 1 the row access sequence resource of distributing from 1,4,7 group.
| | RequestLevel | |||||
| 1 | 2 | 3 | ||||
| 1 | 1 | 2 | 3 | |||
| 2 | 4 | 5 | 6 | |||
| 3 | 7 | 8 | 9 | |||
Suppose that response calling user order is that 1,2,3 user pilot level is 1, response calling user order is that 4,5,6 user pilot level is 2, and response calling user order is that 7,8 user pilot level is 3.
For fear of with the response calling user conflict, then the user of initial call can with the access sequence sequence should from 1,4,7, reserve 8 paging codes simultaneously:
| | Request Level | |||||
| 1 | 2 | 3 | ||||
| 1 | 1 (available access sequence-8) | 2 | 3 | |||
| 2 | 4 (available access sequences-8) | 5 | 6 | |||
| 3 | 7 (available access sequences-8) | 8 | 9 | |||
By with upper type, can solve calling user and the problem that responds the calling user collision, and be according to the dynamic change of paging quantity, fully consistent when not responding calling user with prior art, can not waste resource.
When calling user, the operable access sequence quantity of initial access can reduce, but because the quantity that reduces fewer (every group of available access sequence quantity that reduces is identical with the maximum number of user of response paging), but user for initial access, therefore the reduction of the collision probability of bringing is bigger, and bigger gain is still arranged.
Such as 8 response calling users are arranged, have 4 initial users and 3 response calling user can Request Level be 1 and PilotLevel initiate access in 1 the group one, suppose that group one has 224 available access sequences, then under prior art, collision probability 7/224.
If the employing the solution of the present invention, then responding the calling user collision probability is 0.The initial collision probability that inserts the user is 3/ (224-8), also than reducing greatly originally.When not responding calling user, the collision probability that initially inserts the user is consistent with prior art.
Embodiment two
Increasing by a row requestlevel at the response calling user is 0 row, is specifically designed to the resource allocation of response calling user, and other requestlevel are then own available initial access access sequence sequence numbers of skew backward equidistantly of 1,2 and 3 row.
Such as current eight beep-page messages are arranged, then
| | Request Level | |||||||
| 0 | 1 | 2 | 3 | |||||
| 1 | Reserve 8 access sequences | 1 (available access sequence-3) | 2 (available access sequences-3) | 3 (available access sequences-2) | ||||
| 2 | Reserve 8 access sequences | 4 (available access sequences-3) | 5 (available access sequences-3) | 6 (available access sequences-2) | ||||
| 3 | Reserve 8 access sequences | 7 (available access sequences-3) | 8 (available access sequences-3) | 9 (available access sequences-2) | ||||
This situation is used for each group scene relatively uniformly.
Embodiment three
Respond the scene that calling user does not need to carry pilot Level at some, can not need to reserve and the identical access sequence quantity of response calling user number in each group, each group is kept for the access sequence sum and identical the getting final product of response calling user sum of response calling user.Specifically be to concentrate reservation or even reservation can adopt said method, also can more uniform reservation.
Embodiment four
For some scene, may in two superframe interval, respond the calling user access exploration that still can't be done, then there are two kinds of schemes to avoid the problems referred to above.
The first string is after two superframes finish, and the response calling user is treated oneself automatically as initial access user, and the resource that the user who reserved last time responds paging thoroughly lost efficacy, and all users redistribute resource according to new paging information.
Second scheme is that the access sequence of reserving need add up successively, the resource of last time continues to reserve the length of two superframes, set up certain corresponding relation according to the sequence number of superframe, such as, the value of Hyper Frame Number mould 4 is to reserve primary resource at 0 o'clock and emptied last resource, and the value of Hyper Frame Number mould 4 is to reserve resource for the second time at 2 o'clock.System message is to reserve the reserved resource quantity of last time of resource broadcast notice for the second time at 2 o'clock in the value of Hyper Frame Number mould 4.Other access sequence is specialized in initial calling user and is used.
The present invention is by distributing access-in resource according to channel quality information respectively for responding calling user terminal and initial call user terminal respectively, the access-in resource that corresponding calling user terminal is used does not collide with the access-in resource that the initial call user terminal uses, the access-in resource collision that also not corresponding with other calling user terminal is used, guarantee quick response paging, improved systematic function.
Be preferred embodiment of the present utility model only below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (34)
1. accidental access method is characterized in that may further comprise the steps:
S402, access network is divided into a plurality of access-in resource groups with the access-in resource in the access-in resource set, from described a plurality of access-in resource groups, select one or more access-in resource groups, and in selected one or more access-in resource groups, reserve a part of access-in resource respectively according to the information that the terminal needs carry and be used for one or more response calling user accessing terminal to network, and packet parameters and obligate information are sent to all user terminals; And
S404, information that described response calling user terminal is carried according to the terminal needs and/or described packet parameters and obligate information select access-in resource to come access network from a part of access-in resource of reserving, select described access-in resource to come access network initial call user terminal other access-in resources beyond a part of access-in resource of described reservation.
2. accidental access method according to claim 1 is characterized in that, reserves access-in resource in the following manner:
Dynamically reserve, a part of access-in resource of reservation is used for current response calling user terminal in reserving the term of validity, and described current response calling user terminal is this reserved resource corresponding response calling user terminal; And
Static reservations, a part of access-in resource of reservation is used to respond the calling user terminal always.
3. accidental access method according to claim 1 is characterized in that, according to following at least a information described access-in resource set is divided into a plurality of access-in resource groups: channel quality, service quality and metadata cache amount.
4. accidental access method according to claim 1 is characterized in that, the information that described terminal need be carried comprises following at least a: channel quality, service quality and metadata cache amount.
5. accidental access method according to claim 1, it is characterized in that, described access network is sent to all terminals by following at least a mode with described packet parameters and obligate information: the mode by system message is broadcasted, and transmits by the configuring negotiation mode.
6. according to each described accidental access method in the claim 1 to 5, it is characterized in that described step S402 may further comprise the steps:
S4022a, described access network is divided into a plurality of access-in resource groups with the access-in resource in the described access-in resource set;
S4024a, described access network is selected one or more access-in resource groups according to the information that the terminal needs carry from described a plurality of access-in resource groups, and in selected one or more access-in resource groups, reserve a part of access-in resource respectively and be used for described response calling user accessing terminal to network, and described packet parameters and obligate information are sent to all user terminals.
7. accidental access method according to claim 6 is characterized in that, the quantity of a part of access-in resource of described reservation is more than or equal to the quantity of described response calling user terminal.
8. accidental access method according to claim 6 is characterized in that, selects the access-in resource access network in described initial call user terminal other access-in resources from described access-in resource set.
9. accidental access method according to claim 6 is characterized in that, described step S402 may further comprise the steps:
S4022b is divided into a plurality of access-in resource groups with the access-in resource in the described access-in resource set;
S4024b, from described a plurality of access-in resource groups, select one or more access-in resource groups, and reserve a part of access-in resource respectively and be used for described response calling user accessing terminal to network in selected one or more access-in resource groups, the access-in resource quantity of described reservation is more than or equal to the quantity of described response calling user terminal; And
S4026b deducts a part of access-in resource of described reservation from the set of described access-in resource, and described packet parameters and obligate information are sent to all user terminals.
10. accidental access method according to claim 9, it is characterized in that, under the situation that described response calling user terminal does not still have to insert in the described term of validity, select described access-in resource to continue access network described response calling user terminal other access-in resources beyond a part of access-in resource of described reservation.
11. accidental access method according to claim 10, it is characterized in that, under the situation that described response calling user terminal does not still have to insert in the described term of validity, from selected one or more access-in resource groups, dynamically reserve the access-in resource of quantity respectively in addition, be used for described response calling user terminal and continue access network more than or equal to described response calling user terminal quantity.
12. accidental access method according to claim 11 is characterized in that, described access-in resource comprises: be used for the access sequence set that the access probe of described response calling user terminal or described initial call user terminal is modulated.
13. a random access system is characterized in that comprising:
One or more response calling user terminals and/or one or more initial call user terminal;
Access resource allocation device, the access-in resource that the information that is used for carrying according to the terminal needs is gathered access-in resource is divided into a plurality of access-in resource groups, from described a plurality of access-in resource groups, select one or more access-in resource groups, and in described one or more access-in resource groups, reserve a part of access-in resource respectively and be used for one or more response calling user accessing terminal to network, and packet parameters and obligate information are sent to all terminals;
Wherein, information that described response calling user terminal is carried according to described terminal needs and/or described packet parameters and obligate information select access-in resource to come access network from a part of access-in resource of reserving, select described access-in resource to come access network described initial call user terminal other access-in resources beyond a part of access-in resource of described reservation.
14. random access system according to claim 13 is characterized in that, carries out the reservation of access-in resource in the following manner:
Dynamically reserve, a part of access-in resource of reservation is used for current response calling user terminal in reserving the term of validity, and described current response calling user terminal is this reserved resource corresponding response calling user; And
Static reservations, a part of access-in resource of reservation is used to respond the calling user terminal always.
15. random access system according to claim 13 is characterized in that, according to following at least a information described access-in resource set is divided into a plurality of access-in resource groups: channel quality, service quality and metadata cache amount.
16. random access system according to claim 13 is characterized in that, the information that described terminal is carried comprises following at least a: channel quality, service quality and metadata cache amount.
17. according to each described random access system in the claim 13 to 16, it is characterized in that, described access network is sent to all terminals by following at least a mode with described packet parameters and obligate information: broadcast by the mode of system message and put, and the configuring negotiation mode is transmitted.
18., it is characterized in that described access resource allocation device comprises according to claim 13 or 16 described random access systems:
Access-in resource is divided module, is used for the access-in resource of described access-in resource set is divided into a plurality of access-in resource groups; And
The first access-in resource distribution module, the information that is used for carrying according to the terminal needs is selected one or more access-in resource groups from described a plurality of access-in resource groups, and in selected one or more access-in resource groups, reserve quantity respectively and be used for described response calling user accessing terminal to network, and described packet parameters and obligate information are sent to all terminals more than or equal to the access-in resource of described response calling user terminal quantity.
19. random access system according to claim 18 is characterized in that, selects the access-in resource access network described initial call user terminal other access-in resources beyond a part of access-in resource of reserving described in the described access-in resource set.
20. random access system according to claim 18 is characterized in that, described access resource allocation device also comprises:
The second access-in resource distribution module, the information that is used for carrying according to the terminal needs is selected one or more access-in resource groups from described a plurality of access-in resource groups, and in selected one or more access-in resource groups, reserve a part of access-in resource respectively and be used for described response calling user terminal, the quantity of a part of access-in resource of described reservation is more than or equal to the quantity of described response calling user terminal, and from the access-in resource set, deduct a part of access-in resource of reservation, and described packet parameters and obligate information are sent to all terminals.
21. random access system according to claim 20, it is characterized in that, under the situation that described response calling user terminal does not still have to insert in the described term of validity, select described access-in resource to be used for described response calling user terminal the described first and/or second access-in resource distribution module other access-in resources beyond a part of access-in resource of described reservation and continue access network.
22. random access system according to claim 20, it is characterized in that, under the situation that described before the deadline response calling user terminal does not still have to insert, the described first and/or second access-in resource distribution module is dynamically reserved the access-in resource of quantity more than or equal to described response calling user terminal quantity respectively in addition from selected one or more access-in resource groups, be used for described response calling user terminal and continue access network.
23., it is characterized in that described access-in resource comprises: be used for the access sequence set that the access probe of described response calling user terminal or described initial call user terminal is modulated according to claim 21 or 22 described random access systems.
24. an access resource allocation device is characterized in that comprising:
Access-in resource is divided module, and the access-in resource in the access-in resource set is divided into a plurality of access-in resource groups; And
The access-in resource distribution module, the information that is used for carrying according to the terminal needs is selected one or more access-in resource groups from described a plurality of access-in resource groups, and in described one or more access-in resource groups, reserve a part of access-in resource respectively, be used for one or more response calling user accessing terminal to network, and described packet parameters and obligate information are sent to all terminals.
25. access resource allocation device according to claim 24 is characterized in that, carries out the reservation of access-in resource in the following manner:
Dynamically reserve: a part of access-in resource of reservation is used for current response calling user terminal in reserving the term of validity, described current response calling user terminal is this reserved resource corresponding response calling user; And
Static reservations, a part of access-in resource of reservation is used to respond the calling user terminal always.
26. access resource allocation device according to claim 24 is characterized in that, according to following at least a information described access-in resource set is divided into a plurality of access-in resource groups: channel quality, service quality and metadata cache amount.
27. access resource allocation device according to claim 24 is characterized in that, the information that described terminal is carried comprises following at least a: channel quality, service quality and metadata cache amount.
28. according to each described access resource allocation device in the claim 24, it is characterized in that, described access network is sent to all terminals by following at least a mode with described packet parameters and obligate information: broadcast by the mode of system message and put, and the configuring negotiation mode is transmitted.
29. according to each described access resource allocation device in the claim 24 to 28, it is characterized in that, described access-in resource distribution module is reserved the access-in resource of quantity more than or equal to described response calling user terminal quantity respectively according to the information that the terminal needs carry in selected one or more access-in resource groups, be used for described response calling user accessing terminal to network.
30. access resource allocation device according to claim 29 is characterized in that, selects the access-in resource access network in described initial call user terminal other access-in resources from described access-in resource set.
31. according to each described access resource allocation device in the claim 24 to 28, it is characterized in that, described access-in resource distribution module is reserved a part of access-in resource respectively in addition in selected one or more access-in resource groups, the quantity of a part of access-in resource of described reservation is more than or equal to the quantity of described response calling user terminal, and described access-in resource distribution module deducts a part of access-in resource of described reservation from the access-in resource set.
32. access resource allocation device according to claim 30, it is characterized in that, under the situation that described before the deadline response calling user terminal does not still have to insert, select described access-in resource described access-in resource distribution module other access-in resources beyond a part of access-in resource of described reservation, be used for described response calling user terminal and continue access network.
33. access resource allocation device according to claim 32, it is characterized in that, it is characterized in that, under the situation that described before the deadline response calling user terminal does not still have to insert, described access-in resource distribution module is dynamically reserved the access-in resource of quantity more than or equal to described response calling user terminal quantity respectively in addition from selected one or more access-in resource groups, be used for described response calling user terminal and continue access network.
34. access resource allocation device according to claim 33 is characterized in that, described access-in resource comprises: be used for the access sequence set that the access probe of described response calling user terminal or described initial call user terminal is modulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101151023A CN101132621A (en) | 2006-08-21 | 2006-08-21 | Random access method and system thereof and access resource allocation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101151023A CN101132621A (en) | 2006-08-21 | 2006-08-21 | Random access method and system thereof and access resource allocation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101132621A true CN101132621A (en) | 2008-02-27 |
Family
ID=39129703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101151023A Pending CN101132621A (en) | 2006-08-21 | 2006-08-21 | Random access method and system thereof and access resource allocation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101132621A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869113A (en) * | 2011-07-06 | 2013-01-09 | 上海贝尔股份有限公司 | Method and device for physical random access in communication network |
| CN102932838A (en) * | 2011-08-11 | 2013-02-13 | 华为技术有限公司 | Method and equipment for short-delay resource management and wireless access network equipment |
| CN101909354B (en) * | 2009-06-05 | 2013-11-06 | 电信科学技术研究院 | Method, system and device for judging type of UE |
| WO2016070323A1 (en) * | 2014-11-04 | 2016-05-12 | 华为技术有限公司 | Communication method, terminal device, and base station |
| WO2017036258A1 (en) * | 2015-09-02 | 2017-03-09 | 华为技术有限公司 | Contention access method, contention access device, base station and contention access system |
| WO2018036182A1 (en) * | 2016-08-22 | 2018-03-01 | 华为技术有限公司 | Data communication method, apparatus, and system |
| CN107820728A (en) * | 2017-04-01 | 2018-03-20 | 深圳前海达闼云端智能科技有限公司 | The method and apparatus of Stochastic accessing |
| US9992796B2 (en) | 2011-09-20 | 2018-06-05 | Futurewei Technologies, Inc. | System and method for managing contention in a wireless communications system |
| CN110650534A (en) * | 2018-06-27 | 2020-01-03 | 中兴通讯股份有限公司 | Method, device, computer equipment and storage medium for sending paging message |
-
2006
- 2006-08-21 CN CNA2006101151023A patent/CN101132621A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909354B (en) * | 2009-06-05 | 2013-11-06 | 电信科学技术研究院 | Method, system and device for judging type of UE |
| TWI486082B (en) * | 2011-07-06 | 2015-05-21 | Alcatel Lucent | Method and apparatus for physical random access in a communication network |
| CN102869113B (en) * | 2011-07-06 | 2016-01-27 | 上海贝尔股份有限公司 | The method and apparatus of the physical accidental access in a kind of communication network |
| CN102869113A (en) * | 2011-07-06 | 2013-01-09 | 上海贝尔股份有限公司 | Method and device for physical random access in communication network |
| CN102932838A (en) * | 2011-08-11 | 2013-02-13 | 华为技术有限公司 | Method and equipment for short-delay resource management and wireless access network equipment |
| WO2013020526A1 (en) * | 2011-08-11 | 2013-02-14 | 华为技术有限公司 | Method and device for short-delay resource management, and wireless access network device |
| CN102932838B (en) * | 2011-08-11 | 2014-11-05 | 华为技术有限公司 | Method and equipment for short-delay resource management and wireless access network equipment |
| US9992796B2 (en) | 2011-09-20 | 2018-06-05 | Futurewei Technologies, Inc. | System and method for managing contention in a wireless communications system |
| US10674539B2 (en) | 2011-09-20 | 2020-06-02 | Futurewei Technologies, Inc. | System and method for managing contention in a wireless communications system |
| WO2016070323A1 (en) * | 2014-11-04 | 2016-05-12 | 华为技术有限公司 | Communication method, terminal device, and base station |
| WO2017036258A1 (en) * | 2015-09-02 | 2017-03-09 | 华为技术有限公司 | Contention access method, contention access device, base station and contention access system |
| WO2018036182A1 (en) * | 2016-08-22 | 2018-03-01 | 华为技术有限公司 | Data communication method, apparatus, and system |
| CN107820728A (en) * | 2017-04-01 | 2018-03-20 | 深圳前海达闼云端智能科技有限公司 | The method and apparatus of Stochastic accessing |
| WO2018176503A1 (en) * | 2017-04-01 | 2018-10-04 | 深圳前海达闼云端智能科技有限公司 | Random access method and apparatus |
| US11064535B2 (en) | 2017-04-01 | 2021-07-13 | Cloudminds (Shenzhen) Robotics Systems Co., Ltd. | Random access method and apparatus |
| CN107820728B (en) * | 2017-04-01 | 2021-08-27 | 深圳前海达闼云端智能科技有限公司 | Random access method and device |
| CN110650534A (en) * | 2018-06-27 | 2020-01-03 | 中兴通讯股份有限公司 | Method, device, computer equipment and storage medium for sending paging message |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101132621A (en) | Random access method and system thereof and access resource allocation device | |
| CN102595387B (en) | Method for transmitting RRC information in a wireless communication system | |
| CN109168147B (en) | Hybrid random access method for M2M communication in LTE network | |
| CN101155421B (en) | Method and device for distributing temporary recognition number of subdistrict wireless network | |
| JP2000151494A (en) | Data transmission/reception method and device therefor | |
| US8200241B2 (en) | Terminal random access method for cellular radio communications system and method for generating group identifier | |
| CN1491498A (en) | Method and device for downlink packet switching | |
| CN102291846A (en) | Method for random access and system for realizing same | |
| CN111435869B (en) | Transmission method of downlink control channel, terminal and network side equipment | |
| CN107135461A (en) | Data transmission method and device | |
| CN101222756A (en) | Accidental access method and system | |
| CN101132627B (en) | Mobile communication system and random access method thereof | |
| CN101262279B (en) | An uplink dispatching access control method for time division synchronization code division multi-address access system | |
| CN101064922B (en) | Method and system for preventing access interference in wireless communication | |
| CN101473691B (en) | User device, base station, and method in mobile communication system | |
| CN1135041C (en) | Access request in a predetermined random channel slot to convey additional information | |
| CN1689244B (en) | Method for reducing access noise in a spread spectrum communication system | |
| CN101453786B (en) | Allocating traffic channels in a communications system | |
| CN101971649A (en) | Method and device for providing a service | |
| CN101500267B (en) | Stochastic signature sequence grouping method in enhanced FACH under TDD system | |
| CN101141156A (en) | Power control information transmitting method and system | |
| CN101500241B (en) | Stochastic signature sequence allocation method in enhanced FACH base on newly added signature | |
| WO2001047314A2 (en) | Dynamic allocation of random access capacity in gprs networks | |
| CN1395431A (en) | Communication basic facilities and mehtod for quick building-up up-chain-circuit data | |
| CN103781177A (en) | Information transmission method and device, and base station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20080227 |