CN101019461B - Method and system for wireless network connection - Google Patents

Method and system for wireless network connection Download PDF

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CN101019461B
CN101019461B CN2006800006355A CN200680000635A CN101019461B CN 101019461 B CN101019461 B CN 101019461B CN 2006800006355 A CN2006800006355 A CN 2006800006355A CN 200680000635 A CN200680000635 A CN 200680000635A CN 101019461 B CN101019461 B CN 101019461B
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value
priority
access
network
travelling carriage
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CN101019461A (en
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王志峰
万蓉
林青
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The invention discloses the method and system for providing wireless connection. In accordance with the embodiment of the invention, the invention provides a method for providing wireless network access to least a plurality of mobile telephones, which comprises a step of providing an access network. The method also includes a step of providing a plurality of priority levels related to a pluralityof mobile stations. For example, the plurality of priority level include a first priority level and a second priority level, the first priority level is lowery than the second priority level. The method also includes assigning predetermined priority level to each mobile station, and further includes a step of determining a plurality of values based on the multiple levels.

Description

The method and system that wireless network connects
Technical field
Present invention relates in general to field of telecommunications, especially, the invention provides a kind of method and system that provides wireless network to connect.The present invention has only described by way of example at the multiple access Access Network, for example the application in code division multiple access (CDMA) network.But will be appreciated that the scope of application of the present invention is more wide.
Background technology
The history of the telecommunication technology almost history with the mankind is the same long.Before with the means realization of electricity as information exchange, people have been developed various technology and have been transmitted at a distance with realization information.As adopt the branch journey transmission technology of the vision and/or the sense of hearing to come realization information to transmit at a distance.For example, before several thousand, the border patrol team of China just reports that to local authorities foreign invasion is arranged with smoke signal.American Indian also once used smoke signal.
Along with the invention of early stage telegram of 19th century, the means that various electricity consumptions transmit information grow up thereupon, various types of technology (as phone, fax, radio etc.) for example occurred.
Recently, the mode of utilizing wireless communication system to communicate is extensively adopted by people.For example, people can use mobile phone, beep-pager, even computer is carrying out radio communication each other.Typically, each wireless communication system all uses certain frequency range to transmit signal.Because frequency range is limited, people have been developed various technology, to effectively utilize limited frequency range.For example, various multiple access techniques (as TDMA, CDMA etc.) grow up.
Multiple access technique can make frequency range be utilized effectively, that is, can make more mobile device use given frequency range.Yet simultaneously, multiple access technique needs complexity and meticulous mechanism to realize usually.The technology of traditional management of wireless communications system does not possess sufficient multiple access access capability usually.For example, when a plurality of travelling carriages were visited a system simultaneously, various traditional wireless systems were owing to congestion problems is damaged.The definition of " travelling carriage " should be understood from broad sense.For instance, travelling carriage includes but not limited to radio telephone, beep-pager, portable digital-assistant and accesses terminal etc. be connected to the equipment of wireless network by air interface.
Therefore, need a kind of improved method and system to connect in order to network to be provided.
Summary of the invention
Present invention relates in general to telecommunication technology, especially, the invention provides a kind of method and system that provides wireless network to connect.The present invention has only described by way of example at the multiple access Access Network, for example the application in code division multiple access (CDMA) network.But will be appreciated that the scope of application of the present invention is more wide.
According to one embodiment of present invention, the invention provides a kind of method that provides wireless network to insert to a plurality of at least travelling carriages.This method comprises the step that Access Network is provided, and this Access Network is used for providing network insertion to a plurality of at least travelling carriages.This method also comprises the step that a plurality of priority are provided, and described a plurality of priority are associated with described a plurality of travelling carriages.For instance, described a plurality of priority comprises first priority and second priority.First priority is lower than second priority.This method also is included as the step of each travelling carriage distribution predetermined priority in described a plurality of travelling carriage.This method further comprises the step of determining a plurality of values according to described a plurality of priority.Each value in described a plurality of value is used for all determining that travelling carriage can be linked into the probability of Access Network.For instance, described value is a persistent value.Described a plurality of value comprises first value and second value.First value is based on first priority, and second value is based on second priority.This method further comprises the step of determining the network load value, and this network load value is associated with the load condition of Access Network.In addition, this method also comprises according to the information that is associated with described a plurality of priority and network load value at least, selects the step of a value from described a plurality of values.This method also comprises according to the information that is associated with described a plurality of priority and network load value at least, revises the step of selected value.
According to another embodiment, the invention provides a kind of system that is used for providing access to travelling carriage.This system comprises first communication interface.For instance, this first communication interface is used for providing network insertion to travelling carriage.This system also comprises internal storage location.For instance, this internal storage location is used to store a plurality of priority relevant with travelling carriage.In addition, this system comprises logical block.For instance, this logical block comprises and is used to a plurality of travelling carriages to distribute the module of a plurality of priority, the corresponding priority of each travelling carriage, and described a plurality of priority comprise first priority and second priority at least, first priority is lower than second priority.Logical block also comprises the module that is used for determining according to described a plurality of priority a plurality of values.Each value in described a plurality of value is used for all determining that travelling carriage can be linked into the probability of Access Network.For instance, described a plurality of value comprises first value and second value.First value is based on first priority, and second value is based on second priority.Logical block further comprises the module that is used for definite network load value that is associated with the load condition of Access Network.Logical block further comprises the information that is used for according to being associated with described a plurality of priority and network load value at least, selects the module souning out probable value and revise selected exploration probable value from described a plurality of values.
According to another embodiment, the invention provides a Radio Network System.This system comprises one or more than a travelling carriage.This system also comprises the content service network that is used to provide the Internet connectivity.This system also comprises Access Network.For instance, this Access Network comprises first communication interface, internal storage location and logical block.This first communication interface is used for providing network insertion to travelling carriage.This internal storage location is used to store a plurality of priority that are associated with travelling carriage.This logical block comprises and is used to a plurality of travelling carriages to distribute the module of a plurality of priority, the corresponding priority of each travelling carriage.Logical block also comprises the module that is used for determining according to described a plurality of priority a plurality of values.Logical block further comprises the module that is used for determining the network load value, and this network load value is associated with the load condition of Access Network.Logical block further comprises the information that is used for according to being associated with described a plurality of priority and network load value at least, selects the module souning out probable value and revise selected exploration probable value from described a plurality of values.
As can be seen, embodiments of the invention have multiple advantage than traditional technology.According to some embodiment, the invention provides the technology of progressively adjusting the access exploration frequency according to priority.For example, when the access channel load is heavier (as, represent by high occupancy and high collision probability), progressively revise (that is) and the parameter that inserts frequency dependence for travelling carriage reduces the access exploration frequency, can effectively reduce collision probability.Lift an example explanation, when the access channel load is heavier, at first limit the access exploration frequency of the travelling carriage of low priority, with the normal access speed of the travelling carriage that guarantees high priority.When access channel is got back to the normal duty situation, the access exploration frequency of travelling carriage is also got back to normally, thereby utilizes access channel fully, and improves the access speed of travelling carriage.In addition, also have many other advantages.
According to embodiment, can obtain above one or more advantages.Hereinafter detailed description of the present invention and accompanying drawing can prove absolutely these benefits and the various additional purposes of the present invention, feature and superiority.
Description of drawings
Fig. 1 is the reduced graph of traditional access exploration sequence;
Fig. 2 is the simplified flow chart that is used to provide the method that wireless network inserts of the embodiment of the invention;
Fig. 3 is the reduced graph of the Radio Network System of the embodiment of the invention.
Embodiment
Present invention relates in general to telecommunication technology, especially, the invention provides a kind of method and system that provides wireless network to connect.The present invention has only described by way of example at the multiple access Access Network, for example the application in code division multiple access (CDMA) network.But should be realized that the scope of application of the present invention is more wide.
As mentioned above, the multiple access access net system that is used for radio communication is widely used.Except other functions, the multiple access access net system also by allowing multiple communication equipment to insert single communication network simultaneously, has effectively utilized limited frequency range.For example, frequency division multiple access (FDMA) network, time division multiple access (TDMA) network and code division multiple access (CDMA) network all adopt different multiplexing schemes to provide multiple access to insert.
In order to make the normal operation of multiple access Access Network, need to propose many-sided problem.For example, when two or more travelling carriages were attempted to insert Access Network, Access Network was often because obstruction appears in signal collision.For addressing this problem, when travelling carriage will access network, various traditional access net systems were broadcasted to travelling carriage.
For example the access channel of the 1xEVDO in cdma system (as CDMA 2000) is the common signal channel that is used to broadcast.All travelling carriages utilize the common signal channel exchange to insert message in Access Network and the same sector.For instance, Access Network comprises the base station, and this base station also has wireless access capability except that other functions.
When a plurality of travelling carriages sent access message simultaneously, inserting message may bump, thereby the Access Network network side can not correctly receive and this access message of demodulation.As the example technique that reduces collision, variety of protocol (for example, acquiescence access channel medium access control (MAC) agreement among the CDMA2000 1xEVDO rev0 and enhancing access channel medium access controls (MAC) agreement among the revA etc.) require travelling carriage to send access exploration randomly, equably, to avoid sending access message simultaneously.
Fig. 1 is the reduced graph of traditional access exploration sequence.This figure only is an example, should not regard the improper restriction to claim protection range of the present invention as.Those skilled in the art should approve various variant of the present invention, be equal to substitutions and modifications.
As shown in Figure 1, before each access exploration sequence, travelling carriage can at first continue test.For example, travelling carriage utilizes exploration sequence to judge whether this Access Network is available.As example, the definition of term " persistent value " and " continuing test " is a broad sense." continue to test " to be often referred to and be used to judge whether travelling carriage should initiate the test and/or the formula of exploration sequence." persistent value " refers to whether be used to calculate travelling carriage will initiate the value of exploration sequence.Exploration sequence is generally the wireless signal by predetermined access channel transmission.If test is passed through, travelling carriage will send first access exploration of this sequence.Otherwise travelling carriage will restart to continue test from next cycle.For instance, according to the diverse network standard, each cycle can refer to an access channel cycle.For example, Cycle Length is transferred to each travelling carriage in the scope that Access Network can reach by Access Network by common broadcast channel.For example, in cdma network, Access Network sends access parameter messages, and this access parameter messages has indicated the length that inserts message.When the transmission access exploration sequence, travelling carriage is carried out back off procedure.
When a plurality of travelling carriages were attempted to insert consolidated network, for fear of collision, each travelling carriage was very important at different time access networks.Whether collide and depend on to a great extent whether continue test works well.
In various traditional technology, continue test and use some parameter to judge whether travelling carriage will begin the probability of exploration sequence.Typically, parameter (for example, persistent value etc.) is by being broadcasted to the common broadcast channel of travelling carriage by Access Network.For instance, access parameter messages carries the array of persistent value, and this persistent value is stored in variable array APersistence[4] in (for example, the array of 4 persistent values), this variable array define continue the probability of test for 4 times.For instance, lasting test can be carried out according to following equation:
π = 2 - APersistenc [ i ] 4 , i = 0,1,2,3 (equation 1)
In equation 1, variable " i " is represented the priority class of travelling carriage.Described priority class is meant one group of travelling carriage with same priority or close priority.For example, have the APersistence[i of the travelling carriage of limit priority] equal 0, and the result who continues test equals 1 (be APersistence[i] equal 0 travelling carriage always can begin exploration sequence).Be that this travelling carriage produces one and obeys equally distributed random number x, wherein 0<x<1 before the Mobile Origination access exploration sequence of " i " in priority class.If x<π then tests successfully.If test successfully, perhaps failed 4/ π time, think that then test passes through, and the Mobile Origination access exploration sequence.
Can different APersistence values be set according to four priority and/or the kind of travelling carriage, with the access exploration frequency of control travelling carriage, thus the load on the control access channel.Can be according to the various priority of the concrete protocol definition of some network.For example, acquiescence access channel media access control protocol regulation: with test travelling carriage corresponding priorities is 2, and the priority of giving tacit consent to other travelling carriages is 0.Again for example, strengthen access channel media access control protocol regulation: if consultation parameter (for example, be defined as the parameter of the alternative AccessTerminalClassOverride of overload class that accesses terminal etc.) be not equal to " oxff ", be AccessTerminalClassOverride then with this travelling carriage corresponding priorities; Otherwise default priority is 0.
Each travelling carriage all will be carried out back off procedure between each access exploration sequence.Congested for preventing wireless network, after travelling carriage sends an access exploration sequence, need to wait for that a preset time is at interval (by variable τ sExpression) afterwards, initiates next exploration sequence again.As shown in Figure 1, the time interval between exploration sequence 1 and the exploration sequence 2 is τ sFor example, this predetermined time interval τ sControlled by variable ProbeSequenceBackoff parameter.The value of ProbeSequenceBackoff and/or preset time be τ at interval sUsually can consult to obtain at each travelling carriage by Access Network.
In same access exploration sequence, send a series of probe signal.Usually, the continuity between each probe signal is relevant with the stand-by period.For example, before sending next probe signal, travelling carriage is waited for τ at least pTime.For example, this predetermined time interval τ pSouning out rollback parameter ProbeBackoff by variable provides.The value of ProbeBackoff and/or preset time be τ at interval pUsually consult to obtain at each travelling carriage by Access Network.As shown in Figure 1, the time interval of each probe signal is τ p
As shown in Figure 1, the frequency of the probe signal that travelling carriage is sending depends on and comprises π, τ pAnd τ sIn interior Several Factors.For instance, the π value is high, τ pAnd τ sBe worth lowly, it is just high that travelling carriage sends the probe signal frequency.
Usually, the time interval between the access exploration is more little, and the access speed of travelling carriage is fast more.On the other hand, when traffic peak and/or a large amount of Mobile Origination registration, need transmit a large amount of access informations on public access channel, this may increase the probability of collision.For example, can't separate timing when inserting message owing to collide, travelling carriage can not receive the affirmation (for example, ACK message etc.) of network, can continue to improve transmitting power and carry out access exploration.After an access exploration sequence was finished, if still do not receive the affirmation of automatic network, travelling carriage can restart access exploration sequence, up to the affirmation of receiving automatic network.Perhaps, travelling carriage can be announced to insert message simply and send failure.
As can be seen from the above analysis, when the Time Slot Occupancy rate of access channel and collision probability increase,, can cause travelling carriage to send more access exploration if access exploration sequence is not carried out centralized control effectively.Cause bigger Time Slot Occupancy rate and more multipacting hit.And the raising of transmission power of mobile station also can cause the raising of rise-over-thermal under the sector (ROT).
Because the management access exploration is so important, in recent years, has developed various conventional arts.Unfortunately, as described below, usually there is deficiency in these conventional arts.
Wherein a kind of conventional art that is used to manage access exploration is: the unified persistent value (for example, the APersistence variable in the equation 1 etc.) of revising, these persistent values all are used to calculate the probability of initiating access exploration sequence.
Usually, when monitoring the access channel occupancy when surpassing threshold value, Access Network sends message (for example, access parameter AccessParameters message) to increase all APersistence[i], i=0 wherein, 1,2,3.Just improve by continuing the difficulty of test, to reduce the frequency of Mobile Origination access exploration sequence.For instance, also can only increase the APersistence of certain class travelling carriage, for example, only increase APersistence[0] value.Because under default situations, the priority class of non-test travelling carriage correspondence is 0, so, the difficulty of the lasting test of all user's travelling carriage correspondences also just improved.Be reduced to when being lower than threshold value when monitoring the access channel occupancy, Access Network resends message (for example, AccessParameters message) and reduces APersistence[i] value, i=0 wherein, 1,2,3.
This conventional art has following deficiency.For example, this technology does not embody the priority of travelling carriage.When a large amount of travelling carriages are initiated registration simultaneously, session is set up or connect when setting up,, all improved by the difficulty that continues test for all access explorations.Consequently, can not guarantee the normal access of high priority travelling carriage.In addition, when the access channel occupancy raises, increase the APersistence of all priority class travelling carriages, at this moment, the access channel occupancy can't decrease.As a result, in next monitoring periods, find that still occupancy surpasses threshold value, continue to increase APersistence.For example, very fast its maximum of arrival of APersistence has stoped the access of travelling carriage.
According to another conventional art, the frequency of access exploration signal is by the particular time interval between each access exploration signal, and the control of the particular time interval between each access exploration sequence.For instance, this time interval is consulted to determine by travelling carriage and Access Network.According to this technology, exploration sequence rollback ProbeSequenceBackoff (promptly, the time interval between each access exploration sequence) and sound out rollback ProbeBackoff parameters such as (that is, the time interval between each access exploration signal), all can hold consultation at each travelling carriage.Set up before the session for travelling carriage, Use Defaults.When access channel load raise or reduce, it is normally unpractical that dynamic negotiation is regulated the ProbeSequenceBackoff and the ProbeBackoff of each travelling carriage or part travelling carriage.This is the transmission because of a large amount of over-the-air message, can aggravate the load of access channel.So, must when session is set up, consult and determine parameters such as ProbeSequenceBackoff and ProbeBackoff.For example, for each travelling carriage, according to its priority, priority is low more, and ProbeSequenceBackoff and ProbeBackoff are big more.Therefore, the travelling carriage of high priority can higher frequency send access exploration, and the travelling carriage of low priority then sends access exploration with low frequency.
Because a variety of causes, usually there is deficiency in this conventional art.For example, can not adjust dynamically according to real-time channel load situation.Therefore, even the access channel load is low, the access speed of the travelling carriage of low priority is still very slow, can not insert with normal speed.Again for example, all have higher priority, still can not reduce collision probability, can not solve the high problem of channel load if send the travelling carriage that inserts message simultaneously.
Therefore, be appreciated that the present invention compares with conventional art, have multiple advantage and solved the problem of above mentioning.
Fig. 2 is the simplified flow chart that is used to provide the method that wireless network inserts of the embodiment of the invention.This figure only is an example, should not regard the improper restriction to claim protection range of the present invention as.Those skilled in the art should approve various variant of the present invention, be equal to substitutions and modifications.For example, the various steps in this flow chart all can be increased, remove, replace, duplicate, rearrangement, overlapping and/or overlap.
In step 201, provide Access Network.According to an embodiment, this Access Network is a multiple access Access Network that is used to provide wireless access network.For instance, this Access Network comprises the base station that wireless access can be provided to two above travelling carriages.According to different application, Access Network can belong to networks of different type, for example CDMA, GSM, TDMA, FDMA etc.For example, Access Network can be a part that meets the cdma network of CDMA20001xEVDO standard.
In step 202, a plurality of priority are provided.According to an embodiment, described a plurality of priority are associated with a plurality of travelling carriages.For example, Access Network and priority are all pre-defined according to network standard.Lift an example, in the present embodiment, superfine user's travelling carriage has higher priority than domestic consumer travelling carriage.According to the difference of using, a lot of other priority of level can be arranged.For example, have four priority in the present embodiment at least.
In step 203, for each travelling carriage distributes a priority.For instance, Access Network comprises the logical block that is used to distribute priority.In a specific embodiment,, travelling carriage relates to negotiation between Access Network and travelling carriage for distributing priority.For instance, the network for adopting the work of acquiescence access channel MAC agreement perhaps in session negotiation still imperfect tense, writes the priority of travelling carriage in terminal UIM card.For example, user's priority is divided into four grades, highest priority user is written as 3, the second priority users and is written as 2, the three priority users and is written as 1, and other users are written as 0.In one embodiment, for the imperfection of the UIM information of compatible some travelling carriage, when travelling carriage and Access Network carried out session negotiation, Access Network distributed high priority 3,2 and 1 to three class travelling carriages of limit priority, was that other travelling carriages distribute priority 0.As example, use the process that access channel MAC agreement is carried out distribution priority that strengthens.
In step 204, determine a plurality of persistent values according to described a plurality of priority.For instance, each value in described a plurality of persistent value all can have access to the probability correlation connection of spider lines with travelling carriage.In one embodiment, determine and be provided with the array of persistent value.For instance, APersistence comprises the array of persistent value.For instance, APersistence[i] value (wherein i=0,1,2 or 3) consistent with the priority of travelling carriage.For example, variables A Persistence[0] comprise that priority is the persistent value of 0 travelling carriage.
In step 205, determine the network load value.This network load value is relevant with the load condition of Access Network.According to some embodiment of the present invention, this network load value is determined by Access Network.For example, Access Network dynamic monitoring network load and definite network load value.Different according to using, the network load value can be represented with multiple mode.For example, the network load value can be weighed with the channel time slot occupancy.
In step 206, determine the collision probability value.This collision probability value is relevant with the collision probability of network.According to some embodiment of the present invention, the collision probability value is determined by Access Network.For example, Access Network dynamic monitoring network load and calculating collision probability value.
In step 207, whether Access Network judges the network load value greater than the first network load threshold value TH1, and whether the collision probability value is greater than collision probability threshold value TH2.According to an embodiment, use two network load threshold values.For instance, these two network threshold comprise and are used for the threshold value under the normal situation of network load and are used for threshold value (that is, the normal duty threshold value is less than the overload threshold value) under the network overload situation.For example, first network threshold is the overload threshold value.
In step 208, if judge the network load value greater than the first network load threshold value in step 206, and the collision probability value increases persistent value during greater than the collision probability threshold value.According to a specific embodiment, have that the persistent value of travelling carriage of lowest priority (for example, use APersistence[0] expression) is each to increase a predetermined quantity, until APersistence[0] arrive maximum persistent value.Then, have that the persistent value of travelling carriage (for example, use APersistence[1] expression) of second low priority is each to increase a predetermined quantity, until APersistence[1] arrive maximum persistent value.
According to another embodiment, the persistent value of travelling carriage adopts distributed mode to increase.For example, earlier to the predetermined quantity of persistent value increase of travelling carriage with lowest priority (for example, use APersistence[0] expression); Persistent value to travelling carriage with second low priority (for example, use APersistence[1] expression) increases a predetermined quantity again, and so on.For example, after the persistent value to travelling carriage with limit priority (for example, APersistence[3]) increases predetermined quantity, increase APersistence[0 more back].
Typically, persistent value increases a step-length at every turn.For example, adopt predetermined step-length to increase persistent value.According to some embodiment, after increasing at every turn and/or reducing persistent value, collision probability value and network load value all will be determined according to new persistent value.
In step 209, whether Access Network judges the network load value less than the second network load threshold value TH3, and whether the collision probability value is less than collision probability threshold value TH4.As indicated above, use two network load threshold values.For instance, these two network load threshold values comprise and are used for the threshold value under the network load normal condition and are used for threshold value (that is, the normal duty threshold value is less than the overload threshold value) under the network overload situation.For example, this second network threshold is a normality threshold.Can know that by using two threshold values, embodiments of the invention have reduced the number of times that needs to adjust persistent value.For instance, excessive frequent change persistent value can reduce the speed of network.
In step 210, if judge the network load value less than the second network load threshold value in step 209, and the collision probability value reduces persistent value during less than the collision probability threshold value.According to a specific embodiment, have that the persistent value of travelling carriage of limit priority (for example, use APersistence[3] expression) is each to reduce by a predetermined quantity, until APersistence[3] value arrive 0; The persistent value that has the travelling carriage (for example, use APersistence[2] expression) of second high priority then reduces a predetermined quantity at every turn, until APersistence[2] value arrive 0, and so on.
According to another embodiment, the persistent value of travelling carriage adopts distributed mode to reduce.For example, earlier the persistent value of travelling carriage with limit priority (for example, use APersistence[3] represent) is reduced a predetermined quantity; Persistent value to travelling carriage with second high priority (for example, use APersistence[2] expression) reduces a predetermined quantity again, and so on.For example, after the quantity that the persistent value of the travelling carriage with limit priority (for example, APersistence[0]) reduces to be scheduled to, reduce APersistence[3 more back] value.
Typically, persistent value reduces a step-length at every turn.For example, adopt predetermined step-length to reduce persistent value.As mentioned above, in one embodiment, increase at every turn and/or reduce one or more than behind the persistent value, collision probability value and network load value will be determined according to new persistent value.
In step 211, persistent value is transferred to travelling carriage from Access Network.According to an embodiment, this persistent value transmits by common link.For example, Access Network is simply to all travelling carriage broadcasting persistent values.According to another embodiment, persistent value individually is transferred to travelling carriage from Access Network.
In step 212, travelling carriage judges whether to initiate exploration sequence according to the persistent value that receives.For instance, the travelling carriage that receives exploration sequence judges whether to initiate exploration sequence with the persistent value substitution equation 1 that receives.Be appreciated that formula for example equation 1 meet industrial standard.For example, equation 1 and variant thereof are used in the CDMA standard.Be appreciated that can user's formula 1 variant determine persistent value.
Fig. 3 is the reduced graph of the Radio Network System of the embodiment of the invention.This figure only is an example, should not regard the improper restriction to the claim protection range as.Those skilled in the art should approve various variant of the present invention, be equal to substitutions and modifications.As shown in Figure 3, Radio Network System 300 comprises more travelling carriages 303 and travelling carriage 304.For example, travelling carriage is a mobile phone.As another example, travelling carriage 303 is a facsimile machine, and travelling carriage 304 is a computer.Radio Network System 300 also comprises content service network (CSN) 301.In one example, content service network is used to provide the Internet connectivity.
This system also comprises Access Network 302.According to an embodiment, Access Network 302 comprises communication interface 305, internal storage location 306 and logical block 307.For instance, communication interface is used for providing network insertion to travelling carriage 303 and 304.Internal storage location is used to store the various information relevant with network strategy, for example a plurality of priority that are associated with travelling carriage.Logical block 307 is used for determining persistent value.For instance, each persistent value all is associated with priority.
Logical block 307 is used to provide various types of network functions.According to some embodiment, logical block 307 is determined a plurality of values according to a plurality of priority.For instance, each value in described a plurality of value is used for all determining that travelling carriage can insert the probability of Access Network.For instance, described a plurality of value is stored as the array corresponding with the persistent value of priority.Logical block also is used for determining the network load value.For instance, this network load value is associated with the load condition of Access Network.In certain embodiment, logical block is also calculated the collision probability value according to the network load situation.Logical block is selected a value also according to the information that is associated with described a plurality of priority and network load value at least from described a plurality of values.In addition, logical block also according to the information that is associated with described a plurality of priority and network load value at least, is revised selected value.
According to an embodiment, the invention provides the method that provides wireless network to insert for a plurality of at least travelling carriages.This method comprises the step that Access Network is provided, and this Access Network is used for providing network insertion to a plurality of at least travelling carriages.This method also comprises the step that a plurality of priority are provided, and described a plurality of priority are associated with described a plurality of travelling carriages.For instance, described a plurality of priority comprises first priority and second priority.First priority is lower than second priority.Each travelling carriage that this method also is included as in described a plurality of travelling carriage distributes preset priority.This method further comprises the step of determining a plurality of values according to described a plurality of priority.Each value in described a plurality of value is used for all determining that travelling carriage can insert the probability of Access Network.For instance, this value is persistent value.Described a plurality of value comprises first value and second value.First value is based on first priority, and second value is based on second priority.This method further comprises the step of determining the network load value, and this network load value is relevant with the load condition of Access Network.Further, this method comprises according to the information that is associated with described a plurality of priority and network load value at least, selects the step of a value from described a plurality of values.This method also comprises according to the information that is associated with described a plurality of priority and network load value at least, revises the step of selected value.As an example, this method can be according to explanation shown in Figure 2.
According to another embodiment, the invention provides the system that is used for providing access to travelling carriage.This system comprises first communication interface.For instance, this first communication interface is used for providing network insertion to travelling carriage.This system also comprises internal storage location.For instance, this internal storage location is used to store a plurality of priority that are associated with travelling carriage.In addition, this system comprises logical block.For instance, logical block is used for determining a plurality of values according to described a plurality of priority.Each value in described a plurality of value is used for all determining that travelling carriage can insert the probability of Access Network.For example, described a plurality of value comprises first value and second value.First value is based on first priority, and second value is based on second priority.Logical block is further used for determining the network load value relevant with the load condition of Access Network.Logical block is further used for according to the information that is associated with described a plurality of priority and network load value at least, selects a value from described a plurality of values.Logical block is further used for revising selected value according to the information that is associated with described a plurality of priority and network load value at least.As an example, this system can be according to explanation shown in Figure 3.
According to another embodiment, the invention provides a Radio Network System.This system comprises one or more than a travelling carriage.This system also comprises the content service network that is used to provide the Internet connectivity.This system also comprises Access Network.For instance, this Access Network comprises first communication interface, internal storage location and logical block.This first communication interface is used for providing network insertion to travelling carriage.This internal storage location is used to store a plurality of priority that are associated with travelling carriage.This logical block is used for determining a plurality of values according to described a plurality of priority.Logical block is further used for determining the network load value relevant with the load condition of Access Network.Logical block is further used for according to the information that is associated with described a plurality of priority and network load value at least, selects a value from described a plurality of values.Logical block is further used for revising selected value according to the information that is associated with described a plurality of priority and network load value at least.As an example, this system can be according to explanation shown in Figure 3.
The above only is several specific embodiment of the present invention, and those skilled in that art are to be understood that the present invention can also have other implementation methods of a lot of and the foregoing description equivalence.Therefore should be understood that above-mentioned specific embodiment should not be used for limiting protection scope of the present invention, protection scope of the present invention should be as the criterion with the described scope of claim.

Claims (16)

1. a method that provides wireless network to insert is characterized in that, comprising:
For a plurality of travelling carriages distribute a plurality of priority, the corresponding priority of each travelling carriage, described a plurality of priority comprise first priority and second priority at least, first priority is lower than second priority;
Be provided with and a plurality ofly be used for determining that travelling carriage sends the values of the probability of access exploration to Access Network, the corresponding priority of each value in described a plurality of values, described a plurality of values comprise at least corresponding to first value of first priority with corresponding to second value of second priority;
Determine the network load value of reflection Access Network load condition;
According to described a plurality of priority and network load value, select corresponding to the value of priority and revise selected exploration probable value.
2. method according to claim 1 is characterized in that, further comprises:
If the network load value greater than the network load threshold value, then increases described exploration probable value according to described a plurality of priority.
3. method according to claim 1 is characterized in that, further comprises:
Definite collision probability value that is associated with described Access Network;
If described network load value greater than the collision probability threshold value, then according to described a plurality of priority, increases described exploration probable value greater than network load threshold value and collision probability value.
4. according to claim 2 or 3 described methods, it is characterized in that, increase described exploration probable value and comprise: increase described first value, arrive maximum, increase described second value then until described first value.
5. according to claim 2 or 3 described methods, it is characterized in that, increase described exploration probable value and comprise:
For described first value increases by first quantity, be that described second value increases by second quantity then.
6. method according to claim 1 is characterized in that, further comprises:
If the network load value less than the network load threshold value, then reduces described exploration probable value according to described a plurality of priority.
7. method according to claim 1 is characterized in that, further comprises:
Definite collision probability value that is associated with described Access Network;
If the network load value less than the collision probability threshold value, then according to described a plurality of priority, reduces described exploration probable value less than network load threshold value and collision probability value.
8. according to claim 6 or 7 described methods, it is characterized in that, reduce described exploration probable value and comprise: reduce described second value, arrive minimum value, reduce described first value then until described second value.
9. according to claim 6 or 7 described methods, it is characterized in that, reduce described exploration probable value and comprise:
For described second value reduces the 3rd quantity, reduce the 4th quantity for described first value then.
10. according to claim 1,2,3,6 or 7 described methods, it is characterized in that described exploration probable value is a persistent value, this method further comprises:
Judge according to described persistent value whether travelling carriage initiates access exploration, if then initiate access exploration.
11. method according to claim 1 is characterized in that, comprises for described a plurality of travelling carriages distribute a plurality of priority:, send the information relevant with described priority to described a plurality of travelling carriages by public access channel.
12. one kind provides the system of access to travelling carriage, it is characterized in that this system comprises:
First communication interface is used for providing network insertion to travelling carriage;
Internal storage location is used to store a plurality of priority corresponding with a plurality of travelling carriages;
Logical block comprises being used to a plurality of travelling carriages to distribute the module of a plurality of priority, the corresponding priority of each travelling carriage, and described a plurality of priority comprise first priority and second priority at least, first priority is lower than second priority;
Be used to be provided with a plurality of modules of travelling carriage that are used for determining to the value of the probability of Access Network transmission access exploration, corresponding priority of each value in described a plurality of value, described a plurality of values comprise at least corresponding to first value of first priority with corresponding to second value of second priority;
The module that is used for the network load value of definite reflection Access Network load condition;
Be used for according to described a plurality of priority and network load value, select corresponding to the value of priority and revise the module of selected exploration probable value.
13. system according to claim 12 is characterized in that, described a plurality of values are persistent value.
14. system according to claim 12 is characterized in that, described logical block further comprises the module that is used for definite collision probability value that is associated with the network load situation.
15. system according to claim 12 is characterized in that, described first communication interface is the base station.
16. a Radio Network System is characterized in that, this system comprises:
One or more travelling carriages;
Content service network is used to provide the Internet connectivity; With
As the described system that access is provided to travelling carriage of arbitrary claim in the claim 12 to 15.
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