CN1270720A - Method of base station reconfiguration - Google Patents
Method of base station reconfiguration Download PDFInfo
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- CN1270720A CN1270720A CN98809125.9A CN98809125A CN1270720A CN 1270720 A CN1270720 A CN 1270720A CN 98809125 A CN98809125 A CN 98809125A CN 1270720 A CN1270720 A CN 1270720A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004891 communication Methods 0.000 claims abstract description 141
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 230000003213 activating effect Effects 0.000 claims abstract description 3
- 230000004913 activation Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 19
- 230000008569 process Effects 0.000 description 8
- 238000012546 transfer Methods 0.000 description 6
- 230000001413 cellular effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 238000012508 change request Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
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- 230000008901 benefit Effects 0.000 description 1
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- 230000002950 deficient Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/06—Reselecting a communication resource in the serving access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
Abstract
The present invention proposes a method for assigning communication channels between a first radio transceiver device (MS) and a second radio transceiver device (BS) in a radio communication network, the method comprising the steps of: monitoring (S2,S3) parameters (P) of an assigned first communication channel (UL1), detecting (S4) a request for changing (P') said monitored parameters (P) of said first communication channel, activating (S6), upon detection of a request for a parameter change, a second communication channel (UL2) for communication between said first and said second radio transceiver devices, decoding (S7) both communication channels, judging (S8), whether said additionally activated, second communication channel (UL2) has been decoded successfully, and, upon judging (S8) that said second channel has been successfully decoded, releasing (S13) said first communication channel (UL1) an continuing communication using said second communication channel (UL2) only. The present invention also proposes a corresponding device.
Description
The present invention relates to a kind of method and apparatus of assigned communication channel between the different radio transceiver equipment of cordless communication network.The invention particularly relates to a kind of method and apparatus that the seamless recovery of wireless channel reconstruct fault is provided on the data transmission channel between the different radio transceiver equipment in cellular radio communication network.
Recently, it is very general to be used for the wireless communication networks of mobile communication.This wireless communication networks is set up intercommunication mutually between each user's mobile wireless transceiver equipment, after this aforementioned mobile wireless transceiver equipment is called mobile station MS as first wireless transceiver equipment.
This cellular network generally is made up of a plurality of static wireless transceiver equipment, and after this aforementioned static wireless transceiver equipment is called base station BS as second wireless transceiver equipment.Can suppose that each base station controlled by radio network controller equipment RNC.Communication between the different mobile stations MS is set up by base station BS in the middle of at least one.Each base station BS is by its wireless coverage area definition wireless area.The mobile station MS that occurs in the sub-district and the base station BS of sub-district are set up wireless connections.
The transmission principle that adopts in this cellular wireless networks is generally based on multiple access method.According to the method, a plurality of users for example insert (TDMA) scheme according to known time division multiple access, perhaps according to the scheme that is called Wideband Code Division Multiple Access (WCDMA) (W-CDMA), share same channel.(transmission principle is for example stipulated in the GSM standard that the European Telecommunication Standard committee (ETSI) is issued.Like this, in the TDMA transmission, (physics) channel is divided into a plurality of time slots, these time slots is assigned to each user is used for communication, and time slot divides in groups, forms frame unit.But, according to W-CDMA, have the radio frames that is divided into time slot, but a plurality of time slots are assigned to same user.According to W-CDMA, multiple access inserts based on the sign indicating number that uses in the transmission, rather than the time.) data that transmit in this frame comprise the actual information (for example speech data) that need transmit between the user, and be used to set up and/or the maintenance customer between and/or the control data of the communication channel between user MS and each base station BS.Data are sent to the base station BS of sub-district from each mobile station MS in so-called uplink UL, be sent to each mobile station MS from base station BS in so-called downlink transfer DL.Each channel of uplink and downlink transmission physically differs from one another, and each base station BS is configured to the uplink and downlink transmission at least one channel is provided respectively.But the base station can be adjusted becomes each transmission direction, and up UL or descending DL provide a plurality of different channels respectively.
Actual transmissions in the wireless communication networks realizes by the wireless path between user MS and the cell base station BS.Wireless path (air interface Um) layer 1 (L1 physical layer) is the lowermost layer of transmission, by its physical parameter and/or other characteristic P, and P ' definition.The wireless path characteristic comprises for example frequency aspect physical parameter, the signal power of transmission, and area interference value.The 1st layer parameter of wave point also comprises for example forward error correction coding, interweaves, and the ground floor data flow multiplexing becomes the configuration of physical channel.The frequency of physical channel depends on the traffic load in base station side available frequencies (channel) and/or the sub-district, and the signal power parameter depend on the environment (have or do not have for example grass roots in mountain valley) of base station or densely populated urban area and/or base station BS and and the mobile station MS of described base station communication between distance.
Setting up customer traffic transport service collection (bearer service) new, that release is old or that modification has been assigned all needs to revise the parameter of physical layer, for example new forward error correction coding or (as the CDMA special parameter) channel code, also need to consider the ambient conditions that changes, for example because mobile station MS just away from the base station, has a mountain at base station BS in the horizon range between the mobile station MS.
L1 parameter P, the set of P ' sends to base station BS and mobile station MS with the form of transfer of data (message) from radio network controller (RNC).If parameter is legal, so this message can also comprise time started, i.e. frame number.This message is by being exclusively used in (logic) signaling channel of signaling information transmission, and expression changes the request of actual parameter collection, for example changes to the request of revising collection P ' from collection P.
But, the situation of the signaling procedure failure of wave point may appear changing and/or adjust.
In addition, even send parameter to mobile station MS, this travelling carriage also may can't be used the parameter that is transmitted for some reason.Therefore, such situation can occur: one group of new argument P ' is only legal at network side, promptly use (supposing the normally errorless synchronously of new L1 parameter set), and mobile station MS uses still legal up to now parameter set P to communicate by radio network controller (RNC) and base station BS.
Obviously, this can cause the parameter mismatch between base station BS and the mobile station MS.Therefore, this may cause mobile station MS to detect radio jink failure.In addition, in WCDMA, even synchronously normal to Dedicated Physical Control Channel, the employed physical channel of transfer of data of also can't decode again from the mobile station MS to the base station BS (up UL).
Above-mentioned phenomenon will cause fault, if parameter mismatch can't be corrected, fault can cause communication (calling) to lose (perhaps can't set up) again.
In addition, under minimum situation, network side can find after the cycle that interweaves that generally fault (interweaves and represented the pulse train mistake is become a kind of error-control technique of random error, described as show the 287th page in following document at for example Y.Akaiwa: " Introduction To Digital Mobile Communication ", John Wiley ﹠amp; Sons, New York, USA, 1997).But, when making the decision that relates to channel status, need a plurality of interweaving the cycle.Therefore, can only after detecting fault, channel-failures could be notified to radio network controller.
Therefore, an object of the present invention is to provide a kind of method and corresponding apparatus, be used for assigned communication channel between first wireless transceiver equipment of wireless communication networks and second wireless transceiver equipment, it has eliminated above-mentioned defective.The present invention especially aims to provide a kind of method and apparatus of seamless recovery of network side radio channel reconstruction.
This purpose is passed through a kind of method realization of assigned communication channel between first wireless transceiver equipment of wireless communication networks and second wireless transceiver equipment, this method may further comprise the steps: the parameter of the first communication channel that monitoring is assigned, detect the request of the described monitored parameter that changes described first communication channel, after detecting the request that changes parameter, activate the second communication channel be used for described first and described second wireless transceiver equipment between communication, this two communication channels of decoding, the second communication channel of described additional activation judges whether successfully to have decoded, after judging the described second communication channel of successfully having decoded, discharge described first communication channel, only continue communication by described second communication channel.
In addition, above purpose is passed through a kind of equipment realization of assigned communication channel between first wireless transceiver equipment of wireless communication networks and second wireless transceiver equipment, comprise supervising device, be used to monitor the parameter of the first communication channel of appointment, checkout gear, be used to detect the request of the described monitored parameter that changes described first communication channel, active device, be used for after detecting the request that changes parameter, activate the second communication channel be used for described first and described second wireless transceiver equipment between communication, decoding device, these two communication channels are used to decode, judgment means, be used to judge whether successfully the to have decoded second communication channel of described additional activation, releasing device is used for after the judged result that receives the described second communication channel of successfully having decoded, discharge described first communication channel, only continue communication by described second communication channel.
Further characteristics of the present invention define in each relevant claim.Based on according to method and apparatus of the present invention, can realize following advantage and improvement:
(1) when parameter change occurring, the wireless parameter P of physics L1 layer
Can redefine safely.
(2) can reduce the calling rate of losing, i.e. the quantity of lost-call.
(3) in network according to the work of WCDMA principle, can be rapid
Ground is probably after the single cycle that interweaves, when detecting wireless channel reconstruct
The fault that occurs.In addition, the recovery of (fault) wireless channel reconstruct can not cause
Any loss of data of up direction UL transmission.
(4) under successful reconstruct situation, do not need with the base station handle whole
Restructuring procedure (temporary resource activates and deactivation) is all notified radio network controller.
Therefore, reduced the processing load of the Radio Resource of network controller.
Below in conjunction with accompanying drawing the present invention is described, in the accompanying drawings:
Fig. 1 summarily shows the parts of cordless communication network;
Fig. 2 is (by Fig. 2 A ﹠amp; 2B forms) flowchart text according to the method and the operation of the adjustable device of an embodiment of the present invention.
According to the present invention, if air interface parameters collection P changes the new parameters sets P ' (being meant the ground floor according to OSI/ISO communication layers model) that (or being changed) becomes ground floor, it is active that the up and/or downstream parameter of (" the former ") ground floor of having assigned keeps in base station BS, successfully enabled new communication channel until mobile station MS.
In other words, for example in uplink (UL), for new communication channel UL2 activates the new hardware resource of base station BS side, and do not need to be released to the resource of distributing to last (" former ") radio communication channel UL1, the feature of UL2 is specified by new parameters sets P '.Say there is a physical channel transmission from the mobile station MS to the base station BS, but the base station BS side has two receiving element R more accurately, they utilize the different ground floor parameter work of each mobile station MS respectively.Like this, the signal that a receiving element R can receiving mobile MS is only arranged in the base station BS, it can provide correct decoded result.
If on descending DL direction, new argument and former ground floor parameter all keep active, and then meaning has two transmit wireless communication channels (transmitter unit of base station) to enliven.Fig. 1 summary shows this situation of above explanation.Radio network controller equipment RNC communicates by letter with the base station BS of wireless network, and controls this base station.But, should be noted that in fact a plurality of base stations of radio network controller equipment RNC Control Network.Base station BS is communicated by letter with the mobile station MS in appearing at base station cell.
Particularly, the transfer of data on the up direction UL from the mobile station MS to the base station BS realizes by uplink communication channel (UL1 of operation parameter collection P, the perhaps UL2 of operation parameter collection P ').In the example that provides, used uplink communication channel UL1, UL2 go up different at ground floor (L1) parameter P, P '.Transfer of data on the down direction DL from the base station BS to the travelling carriage is by downlink communication channel DL.In base station side, the reception of the data that uplink direction is sent realizes (among Fig. 1 by the R mark) by two active receiving elements in the base station, and each unit operation parameter collection P, P ' respectively receives.
Should be appreciated that situation about providing only is an example.Can there be a plurality of channels commercial base station, surpasses two up and/or down channels respectively, and figure only shows the minimum essential requirement that can realize base station of the present invention.The present invention only needs the base station to have enough hardware resources, can be for connecting the hardware resource of interim distribution additives amount (for example double).If communicate by letter with base station BS simultaneously more than a mobile station MS, then enough hardware resources and communication channel should be arranged, make that can assign two different channels for each mobile station MS is used for communication, in the sub-district of base station BS, these two channels are not used for communication simultaneously.But, convenient in order further to explain, below describe only at single mobile station.
The flowchart text that Fig. 2 provides the method and the operation of adjustable device.This equipment (not shown in figure 1) forms the parts of base station BS shown in Figure 1.
Referring now to Fig. 2 A,, whole process starts from step S1.In subsequent step S2, check the uplink communication channel between mobile station MS and the base station BS, for example whether UL1 is active.This uplink communication channel is by a reception among at least two available in base station BS receiving element R, and receiving element is labeled as R[UL1 (P) in example shown in Figure 1].If do not detect active uplink communication channel (NO among the step S2), then process repeats, until detecting the active first uplink communication channel UL1 (YES among the step S2).In response to this detection,, monitor the L1 parameter set P of described communication channel UL1 at step S3.In step S4, detect the whether simultaneously parameter P of the last monitoring of instruction change of radio network controller (RNC) side.If do not detect parameter change request/instruction (NO among the step S4), then keep the receiving element R[UL1 (P) that (step S5) communication channel UL1 assigned in the past/activates in the uplink communication] (utilizing ground floor parameter set P to receive), flow process turns back to step S3.If but detect the change request of L1 parameter set, and promptly needing is that new communication channel UL2 activates new argument P ', then process advances to step S6.In step S6, the additional new receiving element R[UL2 of activation communication channel UL2 (utilizing ground floor parameter set P ' to receive) in the uplink communication between mobile station MS and base station BS (P ')].Should be noted that in this case the receiving element R of the base station BS of communication channel UL1 and UL2 is active simultaneously, from the mobile station MS to the base station BS, still have only a physical channel transmission simultaneously.
In subsequent step S7, the data that transmit on L1 parameter (P, P ') the decoding uplink physical channel for communication channel UL1 and UL2.After this, in step S8, whether the decoding of the data that the receiving element that judgement utilizes communication channel UL2 to go up additional activation transmits is correct.If the decoding failure of the transmission data of the L1 parameter set of regulation communication channel UL2 judges that promptly decoding makes mistakes, (NO among the step S8), then this method enters branch, continues in step S9 (Fig. 2 B).
Referring now to Fig. 2 B,, whether the decoding of the transmission data of the L1 parameter set of definite sign communication channel UL1 is still successful in step S9.If determine to utilize the parameter set P decoding transmission data unsuccessful (NO among the step S9) of definition communication channel UL1, then flow process proceeds to step S10.In step S10, can confirm to communicate by letter (calling) is terminated or loses, because the parameter set of utilization definition communication channel UL1, UL2 all can not decoded data.If but the parameter set that utilizes communication channel UL1 is decoded successfully (YES among the step S9), then flow process proceeds to step S11.In step S11, utilize original parameter of assigning to continue communication for channel UL1 (having " former " parameter P).That is, continue to use receiving element R[UL1 (P)], and while releasing unit R[UL1 (P ')], make it be in idle condition again.This has guaranteed can be because of can't successfully not setting up the new communication channels UL2 obliterated data with new argument P '.After this, in step S12, the notice radio network controller (RNC) can't be set up new channel UL2 and be used for communication between mobile station MS and the base station BS.Radio network controller (RNC) can take another suitable action to change parameter set, utilizes the parameter set after changing to set up new communication channel.
Referring to Fig. 2 A, if decoding correct (YES among the step S8 (being)) is promptly judged in the data success that utilizes the decoding of expression communication channel UL2 parameter to send, then this method stream proceeds to step S13 once more.At step S13, discharge to adopt the last appointment of the parameter P of communication channel UL1/enliven receiving element R[UL1 (P)], the communication between mobile station MS and the base station BS utilizes communication channel UL2 to continue, and promptly receiving element R uses communication channel parameters collection P ' to receive.Like this, communication channel UL2 is the communication channel of assigning, and flow process turns back to step S2.If instructed other parameter, then repeated this processing.
By above description, can know clearly and from the travelling carriage to the base station, have only the transmission of physical channel, but in the base station for same mobile station MS has activated have different ground floor parameters two receiving elements of (P, P '), Fig. 1 summary shows this situation.The signal that has only a reception to be correctly decoded in two receiving elements of this of base station side.
Although it is noted that the step S13 of Fig. 2 A mentions is arranged to UL1 with UL2, this is just in order to explain the situation that only relates to two communication channels.The characteristic of communication channel UL2 is defined by its designated parameter collection P ' certainly.
By above description, can know clearly that according to the present invention the total selection of base station BS side can provide the communication channel of the L1 frame of continuous decoding.Particularly, under successful reconstruct situation, do not need temporary resource activation that the base station is handled and the whole restructuring procedure that deactivates all to notify radio network controller (RNC).Therefore, reduced the processing load of radio network controller (RNC).Only setting up the failure of new communication channel with new argument, and keeping raw parameter so that data and calling can not lose the time, just relate to radio network controller (RNC).Whole process is transparent to travelling carriage.
More than at the example of the base station that two up channels (receiving element R) only are provided the present invention has been described.But,, in step S6, must determine to select which channel so for new argument if can use more than two uplink communication channel UL.
The front was carried, and the present invention requires to instruct each communication channel that changes its parameter set to be equipped with additional hardware resource (when considering that up UL transmits, being receiving element R for example).But from avoiding providing a large amount of useless hardware resource angles usually, may not wish fixedly provides twice number of hardware resource for all available channels.Consider for practical factor, can consider to change under the enough situations of possibility, for additionally activating single communication channel in each base station in the request of communication channel parameters collection.Its reason is, can think that the base station BS side instructs the possibility that changes the communication channel parameters collection quite low simultaneously.
For this reason, can take measures to guarantee that having at least one communication channel to be assigned in all available communication channels of base station BS is used for step S3 to S13.
Particularly, can be defined in the total amount that the quantity that detects the communication channel (ongoing calling) of having assigned arrived available communication channel and subtract at 1 o'clock, forbid setting up the new communication between mobile station MS and the base station BS.
The description of the invention that more than provides has mainly been considered uplink transport channel.But the downlink transfer resource also can be utilized and be similar to mode described above and activate.But this need take two caused interference of channel into account, and needs the permission of wireless resource scheduling demand, because in CDMA, all signals all send and the phase mutual interference simultaneously.
Should be appreciated that above description and accompanying drawing only are used for by example explanation the present invention.In the scope of appended claim book, the preferred embodiments of the present invention can change to some extent.
Claims (12)
1. a kind of method of assigned communication channel between first wireless transceiver equipment (MS) of wireless communication networks and second wireless transceiver equipment (BS), this method may further comprise the steps:
Monitoring (S2, the S3) parameter (P) of the first communication channel of Zhi Paiing (UL1),
Detect the request that (S4) changes the described monitored parameter (P) of (P ') described first communication channel,
After detecting the request that changes parameter, activate (S6) second communication channel (UL2) be used for described first and described second wireless transceiver equipment between communication,
Decoding (S7) these two communication channels,
Judge (S8) whether successfully decoded second communication channel (UL2) of described additional activation, and
After judging that (S8) goes out the described second communication channel of successfully having decoded, discharge (S13) described first communication channel (UL1), only continue communication by described second communication channel (UL2).
2. according to the method for claim 1, also comprise:
First keeps step (S5), is used for keeping described first communication channel (UL1) to transmit when described detection step (S4) does not detect the parameter variation.
3. according to the method for claim 1 or 2, further comprising the steps of:
If (S9) the described first communication channel (UL1) of whether successfully having decoded is then determined in described second communication channel (UL2) decoding failure, and
Second keeps step (S11), is used for keeping described first communication channel (UL1) to transmit when successfully having decoded described first communication channel (UL1).
4. according to the method for claim 3, further comprising the steps of:
Notice (S12) radio network controller (RNC) can't utilize described second channel (UL2) to set up radio communication between described first wireless transceiver equipment (MS) and described second wireless transceiver equipment (BS).
5. according to the method for arbitrary aforementioned claim, wherein
Activating described second channel (UL2) afterwards, and channel (UL1, UL2) temporarily active simultaneously.
6. according to the method for arbitrary aforementioned claim, wherein
Described communication realizes in according to the defined frame unit of GSM standard.
7. according to the method for claim 6, wherein
Described communication frame is according to Wideband Code Division Multiple Access (WCDMA) (W-CDMA) standard definition.
8. according to the method for arbitrary aforementioned claim, wherein
Described wireless channel assignment is carried out in uplink.
9. a kind of equipment of assigned communication channel between first wireless transceiver equipment (MS) of wireless communication networks and second wireless transceiver equipment (BS) comprises
Supervising device (S3) is used to monitor the parameter (P) of the first communication channel (UL1) of appointment,
Checkout gear (S4) is used for detect changing the request of the described monitored parameter (P) of (P ') described first communication channel,
Active device (S6) is used for after detecting the request that changes parameter, activate second communication channel (UL2) be used for described first and described second wireless transceiver equipment between communication,
Decoding device (S7), these two communication channels that are used to decode,
Judgment means (S8), the second communication channel (UL2) of the described additional activation that is used to judge whether successfully to have decoded,
Releasing device (S13) is used for discharging described first communication channel (UL1) after the judged result that receives the described second communication channel of successfully having decoded, and only continues communication by described second communication channel (UL2).
10. according to the equipment of claim 9, also comprise:
First holdout device (S5) is used for keeping described first communication channel (UL1) to transmit when described detection step (S4) does not detect the parameter variation.
11. according to the equipment of claim 9 or 10,
Also comprise:
First determines device (S9), if (S9) the described first communication channel (UL1) of whether successfully having decoded is then determined in described second communication channel (UL2) decoding failure, and
Second holdout device (S11) is used for keeping described first communication channel (UL1) to transmit when successfully having decoded described first communication channel (UL1).
12., further comprising the steps of according to the equipment of claim 11:
Notifying device (S12) is used to notify radio network controller (RNC) can't utilize described second channel (UL2) to set up radio communication between described first wireless transceiver equipment (MS) and described second wireless transceiver equipment (BS).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP1998/005893 WO2000016504A1 (en) | 1998-09-16 | 1998-09-16 | A method of base station reconfiguration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1270720A true CN1270720A (en) | 2000-10-18 |
Family
ID=8167057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98809125.9A Pending CN1270720A (en) | 1998-09-16 | 1998-09-16 | Method of base station reconfiguration |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1032992A1 (en) |
| JP (1) | JP2002525909A (en) |
| CN (1) | CN1270720A (en) |
| AU (1) | AU9625898A (en) |
| WO (1) | WO2000016504A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346667C (en) * | 2003-06-11 | 2007-10-31 | 株式会社Ntt都科摩 | Mobile communication system and control station |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2368234A (en) | 2000-10-10 | 2002-04-24 | Ericsson Telefon Ab L M | Channel switching in a UMTS network |
| US7593422B2 (en) | 2002-01-03 | 2009-09-22 | Freescale Semiconductor, Inc. | Method of operating a media access controller having pseudo-static guaranteed time slots |
| US6980541B2 (en) | 2002-01-03 | 2005-12-27 | Freescale Semiconductor, Inc. | Media access controller having pseudo-static guaranteed time slots |
| CN1663300A (en) * | 2002-04-29 | 2005-08-31 | 诺基亚有限公司 | Handovers of user equipment connections in wireless communication systems |
| WO2004010652A1 (en) * | 2002-07-19 | 2004-01-29 | Xtremespectrum, Inc. | Media access controller having pseudo-static guaranteed time slots |
| US7872966B2 (en) | 2003-11-04 | 2011-01-18 | Alcatel Lucent | Protected and high availability paths using DBR reroute paths |
| JP6307534B2 (en) * | 2016-02-16 | 2018-04-04 | アンリツ株式会社 | Mobile communication terminal test apparatus and mobile communication terminal test method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5768260A (en) * | 1993-06-02 | 1998-06-16 | Telefonaktiebolaget Lm Ericsson | Device for changing the transmission parameters in a radio transmitter |
| GB2298338B (en) * | 1995-02-15 | 1999-09-29 | Motorola Ltd | A method for reverse channel sounding in a communications system |
| US5920607A (en) * | 1995-12-29 | 1999-07-06 | Mci Communications Corporation | Adaptive wireless cell coverage |
-
1998
- 1998-09-16 JP JP2000570922A patent/JP2002525909A/en active Pending
- 1998-09-16 WO PCT/EP1998/005893 patent/WO2000016504A1/en not_active Application Discontinuation
- 1998-09-16 CN CN98809125.9A patent/CN1270720A/en active Pending
- 1998-09-16 AU AU96258/98A patent/AU9625898A/en not_active Abandoned
- 1998-09-16 EP EP98950041A patent/EP1032992A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346667C (en) * | 2003-06-11 | 2007-10-31 | 株式会社Ntt都科摩 | Mobile communication system and control station |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002525909A (en) | 2002-08-13 |
| WO2000016504A1 (en) | 2000-03-23 |
| AU9625898A (en) | 2000-04-03 |
| EP1032992A1 (en) | 2000-09-06 |
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