CN1237836C - System for transmitting paging indicator in pilot channel of radio telecommunication system - Google Patents
System for transmitting paging indicator in pilot channel of radio telecommunication system Download PDFInfo
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- CN1237836C CN1237836C CNB001074776A CN00107477A CN1237836C CN 1237836 C CN1237836 C CN 1237836C CN B001074776 A CNB001074776 A CN B001074776A CN 00107477 A CN00107477 A CN 00107477A CN 1237836 C CN1237836 C CN 1237836C
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- 238000000034 method Methods 0.000 claims abstract description 23
- 238000004891 communication Methods 0.000 claims abstract description 5
- 230000008859 change Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 7
- 230000000875 corresponding effect Effects 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 abstract description 7
- 230000006870 function Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000007476 Maximum Likelihood Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/12—Fixed resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention relates to a system for transmitting calling identifier on pilot channels in wireless communication systems. In one embodiment, the wireless communication system is a wireless communication systems based on CDMA and having pilot channels. The calling method of the present invention transmits calling identifier on pilot channels in a fashion of uncoded modulation spread spectrum signal of OOK(open-close keying)or ASK(amplitude shift keying). A mobile station monitors the present of the calling identifier at the given position of the pilot channels, which is determined by using a hash function of the International Mobile Equipment Identity(IMEI). The calling identifier notifies the mobile station to receive the next forward chain circuit common control or the calling channels.
Description
Technical field
The present invention relates generally on the pilot channel of radio telecommunications system, send the system of Paging Indicator, especially, the invention provides the transmission of Paging Indicator on the pilot channel of radio telecommunications system.
Background technology
All base station transceiver subsystem (BTS) in the radio telecommunications system should be with the form of unmodulated spread-spectrum signal pilot signal transmitted continuously.Use pilot channel, travelling carriage (MS) can be caught this system, obtains basic timing and the extraction useful channel information of coherent demodulation to professional or other essential control channels.Therefore, pilot channel is sent out to compare relative higher power with other channels usually.When specific travelling carriage powered up, it received the whole pilot signals from all BTS, and therefrom selected the strongest pilot channel.
In the conventional paging of radio telecommunications system, beep-page message is by convolution ground coding, relaying and interweave, and interweaving is performed on the basis of a frame one frame, thereby travelling carriage must be carried out and separates-interweave and decode to obtain effective beep-page message again.At an embodiment, used Viterbi (Viterbi) algorithm, utilize the repetitive structure of format structure to seek the needed calculation times of encoded interval to reduce.Viterbi algorithm has shown it is the maximum likelihood decoder that is used for convolution code.
Code division multiple access (IS-95 CDMA) system in the IS-95 standard, paging channel is used for to travelling carriage transmitting system Overhead and beep-page message, the basic frame length of paging channel is 20 milliseconds (ms), superframe is made up of 4 basic frames (being 80ms), superframe is the elementary cell that sends message also by as being time slot.
When travelling carriage powers up, it at first attempts the acquisition pilot channel, receives the decode then synchronously and paging channel, receives after the effective system information, and travelling carriage enters idle condition waiting the beep-page message from system, or sends the originating information from the user.
In order during idle condition, to reduce the power consumption of travelling carriage, the operator scheme that paging channel is arranged in the IS-95 system, this pattern makes travelling carriage handle and decoding paging messages at predetermined time slot, in idle condition, mobile station supervision is that its mobile identifier (MIN) or electronics string number (ESN) is the time slot of the paging channel of distribution, and hash function is used to equably travelling carriage is distributed to paging time-slot.This function uses the ESN of travelling carriage to do seed.
Be used for the IMT-2000 system, in order during slotted mode, further to reduce another method of the power consumption of travelling carriage, new and quick paging channel that separate have been proposed.This quick paging channel is made up of Paging Indicator and configuration change designator.So that the coding and the form of OOK (on-off monitoring) or ASK (amplitude shift monitoring) modulated spread spectrum signal do not send them.The existence of the Paging Indicator of mobile station supervision on the ad-hoc location of quick paging channel, this is judged by the hash function that uses ESN.It will receive the public control of next forward link this Paging Indicator notice travelling carriage, or the paging receiving channel.Paging Indicator is sent to travelling carriage, is positioned on the front time slot of the paging time-slot that distributes on the paging channel.Therefore, quick paging channel makes it might make travelling carriage avoid each message of demodulation on the corresponding time slot of paging channel, and can reduce the power consumption of travelling carriage.But this Quick Paging method needs the hardware that separates in BTS.
With reference to above-mentioned, a patent application is arranged about " Paging Signal ControlSystem With Reduced Power Consumption In A Mobile " (United States Patent (USP), No. 5146214, on September 8th, 1992 awardd a certificate).Other patent application discloses " BroadcastShort Message Service Architecture " (United States Patent (USP), No. 5909651, on June 1st, 1999 awardd a certificate).A similar patent application is arranged, about " Adjacent Radio CellsPaging Channel System " (United States Patent (USP), No. 4527284, on July 2nd, 1985 awardd a certificate).
Summary of the invention
The present invention relates generally to send on the pilot channel of radio telecommunications system the system of Paging Indicator, in one embodiment, radio telecommunications system is the radio telecommunications system based on CDMA with pilot channel.
According to an aspect of the present invention, provide a kind of method that on the pilot channel of wireless communication system, transmits paging information, having comprised:
On described pilot channel, create superframe by making up a plurality of frames;
The frame of described pilot channel is divided into a plurality of time slots;
Whenever base station transceiver subsystem need determine to comprise on the described pilot channel position of the superframe of paging information when specific travelling carriage sends paging information;
Whenever described base station transceiver subsystem need change the polarity of described pilot channel and one of them of power level when described specific travelling carriage sends paging information; And
Detect at the locational paging information of described superframe by described specific travelling carriage, wherein when described specific travelling carriage receives and detects paging information on the described pilot channel, the described paging information of described specific travelling carriage demodulation is to determine whether described specific travelling carriage should receive described paging information.
According to another aspect of the present invention, provide a kind of radio telecommunications system, described radio telecommunications system comprises:
The memory that is used for store instruction;
Carry out the processor of corresponding actions based on these instructions;
A plurality of travelling carriages; And
Base station transceiver subsystem;
Wherein said processor is created superframe by making up a plurality of frames on pilot channel, and the frame of described pilot channel is divided into a plurality of time slots;
Wherein need be when specific travelling carriage send paging information in described base station transceiver subsystem, described processor is determined the position of superframe on the described pilot channel;
Wherein need be when described specific travelling carriage send paging information in described base station transceiver subsystem, described processor changes the polarity of described pilot channel and one of them of power level; And
Detect at the locational paging information of described superframe by described specific travelling carriage, wherein when described specific travelling carriage receives and detects paging information on the described pilot channel, the described paging information of described specific travelling carriage demodulation is to determine whether described specific travelling carriage should receive described paging information.
Paging method of the present invention sends Paging Indicator with the form of uncoded and OOK (on-off keying) or ASK (amplitude shift keying) modulated spread spectrum signal on pilot channel.The existence of the Paging Indicator on the mobile station supervision pilot channel ad-hoc location, this is judged by the hash function that uses ESN.It will receive the public control of next forward link this Paging Indicator notice travelling carriage, or the paging receiving channel.
If on pilot channel, send Paging Indicator, because the high transmitted power of pilot channel, Paging Indicator may send with the low-down error rate, simultaneously, because this designator does not need error recovery coding and mistake randomized technique to be sent out with the form of original bit, also reduced the power loss of travelling carriage.
Description of drawings
Accompanying drawing is merged to come in and is constituted the part of specification, and the embodiment of graphic extension of the present invention is used to explain principle of the present invention with its description.
Fig. 1 describes the block diagram that is used for radio telecommunications system of the present invention
Fig. 2 shows the Paging Indicator that inserts on the pilot channel of a most preferred embodiment
Fig. 3 a, 3b and 3c show the virtual condition of the pilot channel transmission of the Paging Indicator that has insertion in several embodiment.Fig. 3 a has described an embodiment, and the sub-fraction of every frame is used for Paging Indicator is inserted pilot channel.Fig. 3 b has described an embodiment, and all positions of the superframe of pilot channel can be used to Paging Indicator, and for example, each frame of superframe can be divided into the N group with k position, and Paging Indicator can be assigned to 1～2 in a group.Fig. 3 c has described in four basic frames, and last frame is used for designator is inserted pilot channel, and Paging Indicator can be assigned to 1～2 in a group.
Fig. 4 has described the another kind of method of inserting Paging Indicator by the power level that changes pilot channel.
Fig. 5 has described the block diagram of the BTS modulator of one embodiment of the present of invention.
Fig. 6 shows the block diagram that travelling carriage obtains Paging Indicator.
Fig. 7 shows the chronogram of pilot channel time slot and Paging Channel Slot.
Embodiment
The present invention relates generally on the pilot channel of radio telecommunications system, send the system of Paging Indicator, as shown in Figure 1.In one embodiment, this radio telecommunications system is the radio telecommunications system with pilot channel.This pilot channel is sent continuously with unmodulated spread-spectrum signal form, so that travelling carriage is caught this system easily.This pilot channel is divided into many time slots, and some part of pilot channel time slot can be used to exchange message, so detected by specific travelling carriage.
In one embodiment of the present of invention, pilot channel is with discrete being sent out with periodic form, as shown in Figure 2.If the information that will send is arranged on pilot channel, so, by covering this information, the n length of pilot channel partly is used to transmission information.Otherwise, unmodulated spread-spectrum signal on pilot channel without any being sent out with revising.N length part must be optimised, with the minimum that influences to pilot capture and channel estimation process.
In one embodiment of the invention, the present invention is applied to IS95 CDMA (IS95 standard code division multiple access) system.The pilot channel that sends has 80 milliseconds of long time slots continuously.This time slot is made up of 4 frames, and every frame contains 20 milliseconds long basic frame, and the structure of frame and time slot can change according to using.For example, frame can be designed to 26.6667 milliseconds long, and time slot can be made up of 26.6667 milliseconds three frames, to create 80 milliseconds time slot.At an embodiment, the figure place that system uses is set to 20 milliseconds of frames of 192, to reach 9600 bps data rate.
There are two kinds of methods information can be delivered to pilot channel.First method is oppositely to change the polarity that sends data.The present invention uses OOK (on-off keying) method when reversing, on the predetermined PN position of pilot channel, oppositely change the phase place of pilot pseudorandom noise (PN) chip.Second method changes power levels of transmitted signals as shown in Figure 4 in the precalculated position.The present invention uses ASK (amplitude shift keying) method when amplitude changes.
Fig. 3 a, 3b and 3c show three exemplary embodiments inserting Paging Indicator on pilot channel.In first embodiment, shown in Fig. 3 a, use the sub-fraction of every frame that Paging Indicator is inserted into pilot channel.In second embodiment, as described in Fig. 3 b, can utilize all positions of the superframe of pilot channel to place Paging Indicator.For example, each frame of superframe can be divided into every group of N group that the k position is arranged.Wherein, pilot time slot is made up of four frames, and 20 milliseconds of frames can be divided into 16 groups of 1.25 milliseconds (for example, 192 of every frame are divided into 16 groups and equal 12 every group), and Paging Indicator exchanges 1 or 2 in a group interior 12.In the 3rd embodiment, shown in Fig. 3 c, utilize the last frame of four basic frames that Paging Indicator is put into pilot channel.
In above-mentioned three exemplary embodiments Paging Indicator being inserted pilot channel, work of the present invention is described in detail with the embodiment shown in Fig. 3 b.All travelling carriages that need to belong to a system are categorized as big as far as possible group.For when information only is sent to specific travelling carriage, reduce quantity from the spurious response of other travelling carriage, therefore,, frame is divided into a plurality of groups by divide the total bit in every frame with integer.Table 1 shows the exemplary division of frame, comprises the figure place in group number in each 20 milliseconds of frame and every group.
Table 1
| Group number in each 20ms frame | Figure place in every group |
| 4 | 48 |
| 6 | 32 |
| 8 | 24 |
| 12 | 16 |
| 16 | 12 |
| 24 | 8 |
| 32 | 6 |
N length should be optimised for the minimum that influences to pilot capture and channel estimation process.During travelling carriage is mapped to the position of pilot channel, use hash function that travelling carriage is distributed on the n length.In one embodiment, the electronics string number (ESN) of travelling carriage is used as seed in the hash function algorithm.
When Paging Indicator only is sent to the appointment travelling carriage,, just need the group of larger amt because the travelling carriage number of each particular system becomes bigger.But in great majority were used, because the false probability of calling out is low, the group number did not need the same with the travelling carriage number huge.This be because travelling carriage to fall into same group the probability that is present in same paging zone very little.
If there be not the ad-hoc location of Paging Indicator on pilot channel to be sent out, the information of this position of pilot channel is sent out as normal flow, and need not change polarity or power level.The existence of the Paging Indicator on the ad-hoc location of mobile station supervision pilot channel, this is judged by the above-mentioned hash function that uses ESN.It is to receive the public control of next forward link for this Paging Indicator notice travelling carriage, or the paging receiving channel.
Fig. 5 shows the block diagram of the BTS of structure according to one embodiment of present invention.As shown in Figure 5, when BTS produced and send pilot channel, when having Paging Indicator (801) to be considered to want the specific travelling carriage of paging, BTS changed the polarity or the amplitude of pilot channel data stream with exclusive OR (803).
Fig. 6 shows the improved block diagram of the existing pilot channel estimation of travelling carriage device parts.As shown in Figure 6, the pilot signal of reception (601) is through pilot despread frequency device, and the pilot data modulator that is sent to channel-estimator and has the Paging Indicator detector.Travelling carriage recovers the pilot data on the precalculated position on the pilot channel, and judges whether the pilot tone designator exists.
When detecting to this paging of mobile stations designator, the time slot of next appointment on the travelling carriage reception of the last Paging Indicator (701) of reception pilot channel (703) and the demodulation paging channel.All BTS by means of the PN of routine skew with unmodulated spread-spectrum signal form pilot signal transmitted continuously.Even system has used identical PN sign indicating number, also have many PN sign indicating numbers, send the PN sign indicating number by using different initial seeds, the PN sign indicating number of BTS is distinguished by this system that makes.
Fig. 7 has described the synchronous distribution that is used for time slot between above-mentioned pilot channel and the paging channel.The superframe principle of supposing paging channel is employed in pilot channel, so that make pilot time slot and paging time-slot synchronous.In another embodiment of the present invention, should operate as follows based on the travelling carriage in the cdma system of IS-95:
1. after travelling carriage powers up, be tuned to suitable receive frequency.
2. the PN of mobile station supervision BTS is offset and catches this pilot channel then.
3. after recognizing the pilot channel of effective BTS, mobile system decoding Sync Channel Message.
In case 4. travelling carriage receive and the decoding paging channel on overhead information, travelling carriage reconfigures it oneself.
5. one or two time slot before corresponding paging time-slot, travelling carriage acquisition pilot channel is also caught cdma system again.
6. travelling carriage enters idle condition, and whether monitoring has its Paging Indicator on the predetermined bit position of distributing to the time slot/frame/group on the pilot channel of travelling carriage.
If 7. travelling carriage detects Paging Indicator, the next paging time-slot demodulation sign indicating number beep-page message of travelling carriage on paging channel then.
8. travelling carriage needs demodulation beep-page message intermittently, so that receive overhead information on paging channel.
If send information at pilot channel, have high transmission power level owing to compare pilot channel with other channels, the transmission of information has the low-down error rate.Because designator can raw bits form be sent out, do not need error correction coding and mistake randomized technique, this has saved the power consumption of travelling carriage.
In the detailed description in front, the present invention obtains describing with reference to concrete here exemplary embodiment, but obviously may produce various modifications and change, but does not all have to break away from the broad spirit and scope of describing as additional claim of the present invention.Correspondingly, the detailed description and the accompanying drawings quilt is as the meaning that is illustration rather than restriction.
Claims (14)
1, a kind of method that transmits paging information on the pilot channel of wireless communication system comprises:
On described pilot channel, create superframe by making up a plurality of frames;
The frame of described pilot channel is divided into a plurality of time slots;
Whenever base station transceiver subsystem need determine to comprise on the described pilot channel position of the superframe of paging information when specific travelling carriage sends paging information;
Whenever described base station transceiver subsystem need change the polarity of described pilot channel and one of them of power level when described specific travelling carriage sends paging information; And
Detect at the locational paging information of described superframe by described specific travelling carriage, wherein when described specific travelling carriage receives and detects paging information on the described pilot channel, the described paging information of described specific travelling carriage demodulation is to determine whether described specific travelling carriage should receive described paging information.
2, according to the method for claim 1, wherein whenever described base station transceiver subsystem when described pilot channel sends paging information, described base station transceiver subsystem sends beep-page message at next time slot, so that described specific travelling carriage finds whether described specific travelling carriage really should receive message.
3, according to the process of claim 1 wherein that described paging information is a Paging Indicator.
4, according to the process of claim 1 wherein that described polarity is produced by on-off keying scheme.
5, according to the process of claim 1 wherein that the power difference is produced by amplitude shift keying ASK scheme.
6, according to the process of claim 1 wherein when not having information to send to any specific travelling carriage, send described pilot channel, and need not to change the polarity of described locational pilot channel and one of them of power level.
7, according to the process of claim 1 wherein that hashing algorithm is used for described specific travelling carriage is mapped to the position of the superframe on the pilot channel.
8, a kind of radio telecommunications system, described radio telecommunications system comprises:
The memory that is used for store instruction;
Carry out the processor of corresponding actions based on these instructions;
A plurality of travelling carriages; And
Base station transceiver subsystem;
Wherein said processor is created superframe by making up a plurality of frames on pilot channel, and the frame of described pilot channel is divided into a plurality of time slots;
Wherein need be when specific travelling carriage send paging information in described base station transceiver subsystem, described processor is determined the position of superframe on the described pilot channel;
Wherein need be when described specific travelling carriage send paging information in described base station transceiver subsystem, described processor changes the polarity of described pilot channel and one of them of power level; And
Detect at the locational paging information of described superframe by described specific travelling carriage, wherein when described specific travelling carriage receives and detects paging information on the described pilot channel, the described paging information of described specific travelling carriage demodulation is to determine whether described specific travelling carriage should receive described paging information.
9, radio telecommunications system according to Claim 8, wherein whenever described base station transceiver subsystem when described pilot channel sends paging information, described base station transceiver sends beep-page message at next time slot, so that described specific travelling carriage finds whether described specific travelling carriage really should receive message.
10, radio telecommunications system according to Claim 8, wherein said paging information is a Paging Indicator.
11, radio telecommunications system according to Claim 8, wherein said polarity is produced by on-off keying scheme.
12, radio telecommunications system according to Claim 8, wherein the power difference is produced by amplitude shift keying ASK scheme.
13, radio telecommunications system according to Claim 8 wherein when not having information to send to any specific travelling carriage, sends described pilot channel, and need not to change the polarity of described locational pilot channel and one of them of power level.
14, radio telecommunications system according to Claim 8, wherein hashing algorithm is used for described specific travelling carriage is mapped to the position of the superframe on the described pilot channel.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR33545/99 | 1999-08-14 | ||
| KR33545/1999 | 1999-08-14 | ||
| KR19990033545 | 1999-08-14 | ||
| KR1019990046678A KR100361223B1 (en) | 1999-08-14 | 1999-10-26 | System providing paging indicators on the pilot channels in a wireless telecommunication |
| KR46678/99 | 1999-10-26 | ||
| KR46678/1999 | 1999-10-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1284795A CN1284795A (en) | 2001-02-21 |
| CN1237836C true CN1237836C (en) | 2006-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001074776A Expired - Fee Related CN1237836C (en) | 1999-08-14 | 2000-05-18 | System for transmitting paging indicator in pilot channel of radio telecommunication system |
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| Country | Link |
|---|---|
| JP (1) | JP2001078267A (en) |
| KR (1) | KR100361223B1 (en) |
| CN (1) | CN1237836C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7295509B2 (en) | 2000-09-13 | 2007-11-13 | Qualcomm, Incorporated | Signaling method in an OFDM multiple access system |
| EP1491027B1 (en) | 2002-03-29 | 2006-05-03 | Interdigital Technology Corporation | Low layer paging indicator processing system and method for multi-layer communication equipment used in a wireless communication system |
| KR100943587B1 (en) | 2003-05-21 | 2010-02-23 | 삼성전자주식회사 | Method for transmitting and receiving data in mobile communication network |
| US7711377B2 (en) * | 2004-06-10 | 2010-05-04 | Qualcomm Incorporated | Efficient paging in a wireless communication system |
| US9137822B2 (en) | 2004-07-21 | 2015-09-15 | Qualcomm Incorporated | Efficient signaling over access channel |
| CN1725870B (en) * | 2004-07-23 | 2010-08-18 | 华为技术有限公司 | Method of implementing quick paging |
| US8565194B2 (en) | 2005-10-27 | 2013-10-22 | Qualcomm Incorporated | Puncturing signaling channel for a wireless communication system |
| US8885628B2 (en) | 2005-08-08 | 2014-11-11 | Qualcomm Incorporated | Code division multiplexing in a single-carrier frequency division multiple access system |
| US20070041457A1 (en) | 2005-08-22 | 2007-02-22 | Tamer Kadous | Method and apparatus for providing antenna diversity in a wireless communication system |
| JP4841235B2 (en) * | 2005-11-30 | 2011-12-21 | 富士通株式会社 | Wireless base station, wireless communication method, and wireless communication system |
| US9125092B2 (en) * | 2005-12-22 | 2015-09-01 | Qualcomm Incorporated | Methods and apparatus for reporting and/or using control information |
| KR101181723B1 (en) | 2006-02-07 | 2012-09-19 | 삼성전자주식회사 | Method and apparatus for performing decoding of a paging channel in a wireless connunication system |
| KR101208133B1 (en) * | 2006-04-26 | 2012-12-04 | 한국전자통신연구원 | Method for paging information in cellular system |
| US8463301B2 (en) * | 2010-03-31 | 2013-06-11 | Qualcomm Incorporated | Methods and apparatus for paging in wireless communication networks |
| CN108632961B (en) * | 2017-03-24 | 2022-08-19 | 北京三星通信技术研究有限公司 | Method and device for receiving paging information |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392287A (en) * | 1992-03-05 | 1995-02-21 | Qualcomm Incorporated | Apparatus and method for reducing power consumption in a mobile communications receiver |
| ZA965340B (en) * | 1995-06-30 | 1997-01-27 | Interdigital Tech Corp | Code division multiple access (cdma) communication system |
| JP3441636B2 (en) * | 1997-11-21 | 2003-09-02 | 株式会社エヌ・ティ・ティ・ドコモ | Apparatus and method for determining channel estimation value, receiving apparatus, and transmission system |
| KR100298363B1 (en) * | 1998-06-08 | 2001-09-06 | 서평원 | Channel Estimator and Channel Estimation Method in CDMA Cellular Communication System |
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- 1999-10-26 KR KR1019990046678A patent/KR100361223B1/en not_active IP Right Cessation
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- 2000-01-21 JP JP2000013408A patent/JP2001078267A/en active Pending
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| JP2001078267A (en) | 2001-03-23 |
| KR100361223B1 (en) | 2002-11-23 |
| KR20010020092A (en) | 2001-03-15 |
| CN1284795A (en) | 2001-02-21 |
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