TW201012260A - Method and apparatus for neighbor list updates - Google Patents

Abstract

An apparatus and method for maintaining information during neighbor list updates comprising acquiring information of a first plurality of GSM neighbor cells; recording and keeping the information for a time period T; receiving a second plurality of GSM neighbor cells; comparing the second plurality of GSM neighbor cells with the first plurality of GSM cells in the record; if a GSM neighbor cell from the second plurality of GSM neighbor cells is not in the record, gathering information pertaining to the GSM neighbor cell; and if at least one GSM neighbor cell from the second plurality of GSM neighbor cells is in the record, determining if the age of the information pertaining to the at least one GSM neighbor cell is less than the time period T and if less than T, locating the at least one GSM neighbor cell.

Description

201012260 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention generally relates to wireless communications. More specifically, the present invention relates to maintaining frequency offset and timing information via neighbor cell list updates. Priority is claimed in accordance with 35 USC § 119. This application claims the priority of the US Provisional Application No. 6/973,041, entitled "Knowledge of the United States", September 17, 2007. The disclosure is hereby expressly incorporated herein by reference in its entirety in its entirety in the the the the the the the the the the the the the the the the the the the The mobile user device (4) typically transitions from a non-good system to another wireless system depending on its mobility and the availability of coverage formed by the wireless system. For example, the transition can occur between a second wireless system and a third generation (3G) wireless system, occurring between a long-term LTE wireless system and a 3G wireless system, or occurring in a wireless wireless system. Between the Global System for Mobile Communications (GSM) wireless systems. See also - Real: 2G wireless systems typically provide basic digital voice and low rate data services to user equipment UEs in a wide coverage area. That is, the thin line ^ is usually (4) universally covered. A wide coverage area uses a plurality of coverage areas, a parent-cell, and an access node (e.g., a base station) to provide a wireless access connection between the active UE and the wireless communication system. Multiple access refers to the feature that allows a user to make simultaneous or nearly simultaneous wireless access to the network via a shared communication medium. Wireless Memory I35012.doc 201012260 can use sub-domain multiple access (SDMA), crossover multiple access (fdMA), time division multiple access (TDMA), code division multiple access (CDMA) and/or orthogonal Frequency division multiple access (OFDMA) to allow multiple UEs to access the wireless communication system. In one example, the 2G wireless system is based on the Global System for Mobile Communications, (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rate GSM Evolution (EDGE), while the 3G wireless system is based on the Universal Mobile Telecommunications System (UMTS). A system can be designed to support one or more standards, such as by the nickname "3rd Generation Partnership Program", which is referred to herein by the Alliance as 3GPP, IS-95, cdma2000, IS-856, W-CDMA, TD-SCDMA,

WiMax, Ultra Mobile Broadband (UMB) standards and other standards. Many wireless communication systems are upgrading their infrastructure to provide enhanced communication services to mobile UEs, such as high rate data services and Internet Protocol (IP) packet delivery services. These enhanced communication services are typically provided by 3G wireless systems. In many cases, 3G wireless systems are only built into portions of the wide coverage area provided by 2G wireless systems. That is, in many cases, the 3G wireless system does not provide universal coverage. The 3G coverage area is usually located in the southern density population area, such as urban centers, airports, shopping centers, business parks, and so on. In this case, the 3G coverage area appears as island-like coverage in a wider 2 (5 coverage area). This diversity of coverage areas introduces action. The UE's wireless access connection is between the 2G coverage area and the 3G coverage area. The necessity of a transition. Although an example of a transition between a 2G coverage area and a 3G coverage area is described herein 'but the UE can transition between any coverage area of any radio access technology used by any wireless system, radio access technology Including (but not limited to) UMTS (Universal Mobile Telecommunications System), GSM (Global Line 135012.doc 201012260 Mobile Communication System), GSM/GPRS ("Packet Radio Service Certificate (Enhanced Data Rate Read Evolution), LTE (Long Term Evolution) , is_95 (temporary standard 95), CDMA2_, EVD0 (evolution data optimization) or polygon (super mobile broadband), etc. Moreover, during the transition period, if the transition procedure is delayed, it may be interrupted. [Summary of the Invention] Apparatus and method for maintaining frequency offset and timing information during neighbor cell list update. Maintaining frequency offset in time according to neighbor cell list update The method for ordering information includes: obtaining information about frequency offset and timing of each of the first plurality of GSM neighboring cells; recording an identification code of each of the first plurality of GSM neighboring cells, Frequency offset and information of the timing and maintaining the frequency offset and the information of the timing in the recording duration time period τ; receiving a list of the second plurality of GSM neighboring cells; comparing the second plurality (four) phase m The identification code of the one of the first to the plurality of mothers in the record; if the GSM neighboring cell from the second plurality (four) nr is not in the record, then Information about the frequency offset and timing of the GSM neighboring cell; and if at least one GSM neighboring cell from the second plurality of GSM neighboring cells is in the record: then determining the at least-GSM neighboring cell Whether the frequency offset and the timing f is less than the time period τ' and if the aging is less than the time period, the at least one GSM neighbor cell is clamped. 'The memory contains the memory that can be executed by the processor to perform the following operations. In another aspect, a user Included is a processor and a memory I35012.doc 201012260 weight to obtain the first-plural GSM phase::::: information; - a list of a plurality of two plural neighboring cells; each of the second neighboring cells The identification code of one and the first to the plural of each of the nth phase GSM cells in the record

Adjacent j F (four) code; if from the second plurality of GSM parameters, one of the neighboring small Qs, the GSM neighboring cell does not (4) record, the frequency offset and timing information of the GSM neighboring cell; and self. At least one of the plurality of GSM neighboring cells from the second to the less GS_neighboring cell is in the record, determining whether the aging of the frequency recording intermediate signal of the at least one GSM neighboring cell is less than the time period τ, and The capital of the order locates the at least-GSM neighboring cell. If the aging is less than the time period, the wireless communication device in the "offset and timing" information in the other (4) of the (4) cell material includes: each of the plurality of GS_ neighbor cells used in the first L Component of frequency offset and timing ;; for recording information of each of the first-complex GSM neighboring cells ==:,: frequency offset and the timing and maintaining the frequency offset and the timing a component of the time-period T in the recording; a component of the list of the second plurality of GSM neighboring cells; and a comparison for the second plurality of GSM neighboring cells a component of an identification code of each of the first plurality of GSM cells; determining a frequency offset and timing for at least a GSM neighboring cell from the first plurality of GSM neighboring cells Whether the timeliness of the information is time-cut I35012.doc -9. The component of the segment τ of 201012260, wherein the neighboring cell is in the record; the component from the second plurality of GSM neighboring cells to the neighboring cell is located, Wherein the frequency offset is less than the time period Τ. The computer program product comprises a computer readable medium, and the computer readable medium includes: a program for obtaining the first type of monument, using: frequency offset and timing information... Each identification code, the frequency offset, and the timing of the first plurality of GSM neighboring cells, and the information of the frequency offset and the sequence are maintained in the recording period. a code of τ; for receiving a first plurality of GSM neighboring cells - a list. The second plurality of GSM neighboring cells are each ί4,; used to compare each of the identification codes and The code of the code of the ==the first to the plurality of (four) cells is used to determine the frequency offset and timing of at least: the GSM neighboring cell from the second plurality of (four) neighboring cells Whether the timeliness of the information is less than the intermediate code τ-type code, wherein the at least one deleted neighbor cell is in the record and the program for locating at least one bribe neighboring cell from the second plurality of GSM neighboring cells Code, where the frequency offset and the timing of the information are timed During this time period T. Advantages of the present invention include reducing the time to identify g' neighboring cells via neighbor cell list updates. Additional advantages include avoiding interrupted calls and improving transitions between wireless systems in a shorter amount of time. Success rate, and improved user experience. It should be understood that those skilled in the art will see other 135012.doc •10· 201012260 aspects from the following [embodiments], which show and describe various aspects by means of legends. The embodiments and the [embodiments] are illustrative and not restrictive. [Embodiment] The embodiments set forth below in conjunction with the drawings are intended to be illustrative of various aspects of the invention. The only aspects of the invention are practiced. Each of the aspects described in the present invention is merely provided as an example or description of the present invention, and is not necessarily construed as being advantageous over the other embodiments or more advantageous than other embodiments. This embodiment includes specific details for providing a thorough understanding of the invention. However, it will be readily apparent to those skilled in the art that the present invention may be practiced without the specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the invention. The abbreviations and other descriptive terms may be used for convenience and clarity, and are not intended to limit the scope of the invention. Although the method is shown and described as a series of acts for the purpose of simplifying the explanation, it should be understood and understood that the methods are not limited by the order of the action, φ because some actions may be in accordance with one or more aspects. The order shown is different from the order in which the acts are described, and/or concurrent with other acts in the acts shown and described herein. For example, the skilled artisan will understand and appreciate that a method can be represented as a series of related states or events, such as in a state graphic. Moreover, not all illustrated acts may be required to implement a method in accordance with one or more aspects. 1 is a block diagram illustrating an example access node/UE system 100. Those skilled in the art will appreciate that the example access node_system (10) illustrated in Figure i can be implemented in an FDMA environment, an OFDM environment, a cdma environment, 135012.doc

201012260 WCDMA environment, TDMA environment, SDMA environment or any other suitable wireless environment_. The access node/UE system 1 includes an access node (also known as a base station) and a user 6 or UE 201 (also referred to as a wireless communication device). In the downlink branch, the access node 1〇1 (also known as the base station) includes a transmit (τχ) data processor A 110 that accepts, formats, encodes, interleaves, and modulates (or symbol maps) the traffic data. And provide modulation symbols (also known as data symbols). The data processor A U0 communicates with the symbol modulator A 120. The symbol modulator A 12 receives and processes the data symbols and the downlink pilot symbols and provides a stream of symbols. In one aspect, symbol modulator A 12〇 communicates with processor A 18〇, and processor A 180 provides configuration information. The symbol modulator A 12〇 communicates with the transmitter unit (TMTR) A13. The symbol modulator a12q multiplies the data symbols and the downlink pilot symbols and provides them to the transmitter unit A 13〇. Each "' symbol to be transmitted can be a data symbol, a downlink pilot symbol, or a zero signal value. The downlink pilot symbols can be continuously transmitted in every - symbol period. In the -state, the downlink pilot symbols are divided by frequency division (4) M). The other m downlink pilot symbols are orthogonally frequency division multiplexed ::FDM). In the re-segment, the 'downlink pilot symbols are transmitted through the code division multiplex A chain '#', and the 11-unit A 13G receives the symbol stream and converts j to - or multiple analog signals and further adjusts (eg , amplifying, =, and: or upconverting) the analog signals to produce a signal suitable for wireless transmission. The downlink is then transmitted via the antenna MG. In the downlink branch, the UE 201 includes an antenna 21〇, and the antenna 210 is used for I35012.doc 201012260 to receive the class t'T* downlink link signal and compare the analog downlink The signal is input to the receiver military (RCVR) b 22〇. In one aspect, receiver unit B 220 adjusts (eg, 'wave, amplify, and downconverts the analog downlink signal to a first adjusted' signal. Then the first "adjusted" signal Sampling is performed. Receiver unit B 220 is in communication with symbol demodulator B 230. The symbol demodulation variable B 230 demodulates from the first "tuned $ &sampled" signal from the receiver unit b 22〇 output (also known as data symbols). Those skilled in the art will appreciate that alternative methods can be implemented in the symbol demodulation device B 23A. The symbol demodulator B 230 is in communication with the processor B 240. Processor B 240 receives the downlink pilot symbols from demodulation transformer b 23 and performs channel estimation on the downlink pilot symbols. In one aspect, the channel is estimated to be the process of characterizing the current propagation environment. The symbol demodulator B 230 receives the frequency response estimate of the downlink branch from processor B 240. The symbol demodulator B 230 performs data demodulation on the data symbols to obtain a data symbol estimate on the downlink path. The data symbols on the downlink path are estimated as estimates of the transmitted data symbols. The symbol demodulator B 230 is also in communication with the RX data processor B 250. The RX data processor B 250 receives the data symbol estimates on the downlink key path from the symbol demodulator B 230 and, for example, demodulates (ie, symbol demap), interleaves, and/or decodes the downlink path. The data symbol is estimated to restore the traffic information. In one aspect, the processing by symbol demodulation transformer B 230 and RX data processor B 250 is complementary to the processing performed by symbol modulator a 120 and TX data processor A 110, respectively. In the uplink branch, the UE 201 includes a TX data processor b 26〇. 135012.doc 13 201012260 TX data processor B 260 accepts and processes the traffic data number, material processor B 260 and symbol modulator 〇27 call = coordinator D 270 accept and multiplex data symbols and uplink routing The frequency symbol 2 is modulated and provides a symbol stream. In one aspect, the symbol number 'execute processor B (four) communicates, and processor B24 〇 provides group D 270 to communicate with transmitter unit B28. Symbol Modulation Each symbol to be transmitted can be a caution M over ❹ zero H value (four) frequency symbol or zero value. It can be cut in the mother-money and financial resources. In one aspect, the uplink pilot symbols are frequency division multiplexed (four) symbols. In another aspect, the uplink key pilot symbols are positive (OFDM). In the re-segment, the uplink pilot symbols are divided/multiple-turned (CDM). In one aspect, transmitter unit B 280 receives the symbol stream and converts /, to - or multiple analog signals and further conditions (eg, amplification filtering and/or upconverting) the analog signals to produce a wireless suitable The transmission is analogous to the uplink signal. The class signal is then transmitted via antenna 210. The analog uplink signal from the UE 201 is received by the antenna 14〇 and processed by the receiver M 15G to obtain the sample, and the receiver unit is adjusted (eg, chopping, amplifying, and descending). The frequency conversion) analog uplink signal is a second "adjusted" signal. The second "adjusted" signal is then sampled. Receiver unit A 15G communicates with the symbol demodulator c i6G. The skilled person will understand that the alternative method can perform the sampling process in the symbol demodulation variable (9) (4). The symbol demodulation transformer c (10) performs data demodulation on the data symbol to obtain the (four) symbol estimate on the uplink key path, and then will be 135012. Doc -14- 201012260 The uplink symbol pilot symbol and the data symbol estimation on the uplink path are provided to the RX data processing. The f symbol on the HA heart uplink path is estimated as the estimated eRX data processing of the transmitted data symbol. The device A 17 processes the data symbol estimate on the uplink path to recover the traffic data transmitted by the wireless communication device. The symbol demodulator c 16〇 also communicates with the processor VIII. HA 18G for each role of transmission on the uplink branch: the terminal performs channel estimation. In the aspect, 'multiple terminals can be assigned their respective pilot subbands on the uplink link branch. The pilot symbols are transmitted simultaneously on the set, wherein the set of pilot subbands can be interleaved.

The processor A 18 and the processor 8 24 respectively direct (ie, control, coordinate, or manage, etc.) the access node 101 (also referred to as the base station) and the operation at the UE 201 in one aspect of the processor A One or both of 18" and processor B 240 are associated with one or more memory units (not shown) for storing code and/or data. In one state |, processor A j 8〇 or processor Β Μ. Medium = one or both perform calculations to estimate the frequency and impulse response of the upstream and downstream link knives. In one aspect, the 'access node/UE system 1' is a multiple access system. For multiple access systems (e.g., FDMA, OFDMA, CDMA, TDMA, SDMA, etc.), multiple terminals can simultaneously transmit transmissions on the uplink link branch. In the aspect, for multiple access systems, the pilot subbands can be shared between different terminals. The channel estimation technique can be used in the case where the pilot subband of each terminal spans the 乍 band (possibly excluding the band edge). This pilot subband structure can be needed to obtain the frequency diversity of each terminal. 135012.doc •15· 201012260 FIG. 2 illustrates an example of a wireless communication system 290 that supports a plurality of users. In FIG. 2 'reference numerals 292A through 292G refer to cells, reference numerals 298A through 298G refer to base stations (BS) or base transceiver stations (bts), and reference numerals 296A through 296J refer to access user equipment (UE) ). The cell size can be changed. Any of a variety of algorithms and methods can be used for transmission in the scheduling system 29A. System 290 provides communication for a plurality of cells 292A through 292G, each of which is serviced by a respective base station 298A through 298G. Inter-system (i.e., Inter-Radio Access Technology (IRAT) transition) handover occurs when a call being made is transitioning between a cell of one network and a cell of another network. This transition can occur, for example, between a WCDMA site and a GSM site. For example, if there is a radio frequency with high interference in a WCDMA cell or if the signal strength falls below a certain threshold, the WCDMA network can request 1; measure and report nearby GSM cells (" Signal quality of neighboring GSM cell|,). This measurement is then used to facilitate the transition to the gsm cell. Typically, if a transition does not occur, the service (for example, a voice call) 中断 is interrupted. If the service is interrupted, the UE can perform cell reselection on the GSM network by starting a new connection with the GSM network after the service is interrupted. However, the user experience is affected. • In an example, when a UE within a cell (source cell) is near the edge of its coverage area and close to the coverage area of another cell (target cell), if, for example, for consecutive times X time intervals, it is constantly approaching The signal quality of the target cell is higher than the signal quality of the source cell, and an Inter-Radio Access Technology (IRAT) transition can be triggered. Those skilled in the art will appreciate that the value of χ can be selected based on system parameters, application characteristics, and/or user choices without affecting the scope or spirit of the invention. It takes a limited amount of time for the UE's wireless access connection to transition between wireless systems to complete. For example, if ue starts to be in a source cell using 3G radio access technology and begins to transition to a target cell using 2G radio access technology, then the ue& must begin to collect. System information from the BS in the target cell. . This process may take some time to complete for some systems, for example, several seconds (such as 3-5 seconds p at this time, for example, a voice call from the source cell may be interrupted or its signal φ quality may be compromised. Collecting all basic system information from the target cell and performing action information updates to the target cell and its associated radio access technology (RAT) will improve transition efficiency and reduce disruption services. Those skilled in the art will appreciate that the present invention The scope and spirit are not affected by other instances of radio access technology used by other wireless systems including, but not limited to, UMTS, WCDMA, GSM, GSM/GPRS/EDGE, LTE, IS-95, CDMA2000. EVDO or UMB, Figure 3 illustrates an example of a wireless communication k system 300 for interactive radio access technology (IRAT) transitions. As illustrated in Figure 3, the wireless communication network 3 includes user equipment 310, a base station (bs)a 320, base station controller (BSC) A '330, core network 34 〇, second base station controller (bsc) b 35 〇 and second base station (BS) B 360 In one example, the UE includes a mobile phone (mobile phone), a computer with wireless internet connectivity, WiFi and WiMAX compatible devices, etc. The core network 340 is different from the user (ie, 'user device') An infrastructure that interconnects other users of the network. For example, the core network provides mobility management, session management, and Internetworking in GSM and 135012.doc 17 201012260 UMTS (ie, WCDMA) networks. Network Protocol (IP) Packet Transport Service. In one example of Figure 3, core network 34 is linked to the WCDMA side via base station controller A 330 and base station A 32. Base station controller A in this example 330 is a Radio Network Controller (RNC), which is a handling entity in the UMTS Radio Access Network (UTRAN) responsible for controlling a base station connected to rNc. For example, the RNC is responsible for radio resource allocation, frequency management, and / or the transfer between the base stations.

The RNC (i.e., base station controller a 33A) includes a neighbor cell list generator 335. The neighbor cell list generator 335 generates a list of GSM neighbor cells for handover from WCDMA to GSM. On the other hand, as shown in Fig. 3, the core network 34 is linked to the GSM side via the base station controller b 35 〇 and the base station b 36 。. In order to facilitate the handover, the measurement control information such as the information of the neighboring cell list is taken from the network for use by the UE. In one scenario, a list of neighbor cells is provided to the UE 31 to indicate which GSM cells are available and/or not accessible by UEs operating in the WCDMA cell. Based on the list, the network decision is that the IRAT handover can occur at the time of the cell. Based on the handover of neighboring cell list information, avoiding interruption of service and providing continuous service t to reduce the time taken to identify available neighboring cells (eg, 'available GSM cells) by neighboring cell list update, avoiding radio link Failure to interrupt service. This can be achieved, for example, by maintaining the information of the _frequency offset and timing during the GSM neighbor cell list update to achieve 1 per-times from the start of the partial scan of the same GSM neighbor cell, maintaining (storing The deletion of the frequency offset and timing information from the last-time update of the adjacent J-zone allows for faster and more efficient identification of the same GSM neighboring cell. During an active call period I35012.doc •18-201012260, the UE is often in a soft handoff condition, where ue receives signals from multiple cells. The set of cells in soft handover with the UE is called an active set. The wireless network (example b, UTRAN) sends an ActiveSetUpdate (Asu) message ^ TM ' to add the cell to the set or remove the cell from the active set based on event 1A or event 1B reported by the UE. Event 1A" occurs when the primary common pilot channel (P-CPICH) enters the reporting range. The P_CPICH provides intra-cell timing reference and is scrambled by the primary scrambling code (psc). "Event _ 1B" occurs when P_CPICH leaves the reporting scope. After the UE reports Event 1A or Event 1B, the network sends an ActiveSetUpdate CASU message to the UE to add or delete cells in the active set. The ActiveSetUpdate message is followed by the Measurement Control Message (MCM). The Measurement Control Message (MCM) determines the type of measurement performed by the elevation and the type of measurement performed on the neighboring cell. Types of measurements include, but are not limited to, intra-frequency measurements, inter-frequency measurements, quality measurements (eg, block error rates), internal UE measurements (eg, 'UE transmitted power), traffic volume Measurements (eg ' RLC buffer payload) and ue position measurements. In one aspect, the MCM includes a list of neighboring cells of the UE. After the UE receives the MCM, the UE measures the received signal quality of neighboring cells (e.g., GSM cells) on the list, and reports the measurements to the source cell for further forwarding. The UE may be required to search for and report the best signal quality (ie, the strongest signal strength) within a specified time. The cross-measurement measurement in WCDMA can use the "compression mode". When operating in WCDMA, the transmission gap can be inserted into the 135012.doc •19·201012260 WCDMA frame during the transmission of data between the UE and its base station. Obtain the transmission gap and cut off the data portion of the WCDMA frame, that is, set it to "compression mode". However, the integrity of the data is known to those skilled in the art (such as in the reduction exhibition). The increase in data rate in the case of a frequency factor is preserved. Having a transmission gap allows the UE to measure the received signal quality from neighboring cells during the gap. For example, during a transmission gap in some WCDMA frames, the UE The RF receiver tunes to the GSM frequency to extract frequency and timing information from the GSM neighboring cell. Receiving the signal from the GSM neighboring cell without any prior information can begin with some uncertainty in frequency and timing. For example, frequency uncertainty can be attributed to oscillator frequency offset and shift or due to relative motion, resulting in Doppler frequency shifting. The timing uncertainty can be attributed to the lack of initial synchronization information. The Frequency Correction Channel (FCH) provides the UE with a frequency reference for the GSM neighboring cell, and the Synchronization Channel (SCH) supplies the UE with the UE required to enable demodulation. A training sequence of information from a GSM neighboring cell. For example, a UE operating in a WCDMA cell can detect an FCH channel to obtain frequency offset information between a WCDMA cell and a GSM neighboring cell. Decoding to obtain timing information for the GSM neighbor cell. In one aspect, in an ActiveSetUpdate (ASU) message, the network commands the UE to delete certain GSM neighbor cells from the active set and simultaneously add the same GSM neighboring cell. In another example, the UE receives an ASU to delete certain GSM neighboring cells from the active set, but after a very short period of time, the UE receives another ASU message to add just the role. The middle set deletes the same GSM neighbor cell of 135012.doc -20- 201012260. To improve efficiency and provide faster IRAT handover, after the UE has successfully identified a feasible GSM neighbor cell (during the neighbor cell list update), U E maintains information about the GSM neighboring cell (eg, 'frequency offset information found during FCH carrier tone detection and timing information found during sch decoding). The time period is familiar to the person skilled in the art. Use various durations of time period ,, and time period Τ can be based on

System parameters, application considerations, and user choices are selected without affecting the scope and spirit of the present invention. In this example, if within the time period ,, the request is to identify the same GSM neighbor cell based on the most recently updated received signal strength indication (RSSI) order, then information about the frequency offset and timing of the GSM neighbor cell It can be extracted from the record because it was retained. Then, the UE can locate the GSM neighboring cell within a short period of time' because there is no need to gather information from zero. In the - state sample, the time shot corresponds to the τ-_ fine phase. This parameter is used in WCDMA compression mode and is group green by the network.

Tjec〇nfirm_abort is allowed to re-phase the GSM (four) cell frequency (four) shift and timing when considering that the wcdma cell (in this case, the source cell) and the GSM neighbor cell (in this example, the target cell) are continuously changed. The biggest time. The time period τ does not exceed - coffee (4) (10) is to ensure that the frequency offset and timing information is # before (that is, but... Figure 4 illustrates an example flow chart for maintaining frequency timing information during neighbor cell list update. 4. The example in Figure 4 is WPnA/fA r- in the transition from 1(10) of the preparation/deletion of neighboring cells. It should be understood by those skilled in the art that the flow chart of the example can be generalized to adapt to Any two 135012.doc -21 - 201012260 IRAT transitions at the cell site without affecting the scope and spirit of the present invention "At block 410, the UE obtains from at least one of a plurality of WCDMA cells in an active set Primary scrambling code A (PSC A). A known method for obtaining PSCs known to those skilled in the art can be used without affecting the scope and spirit of the present invention. The UE can identify the primary scrambling code of the WCDMA cell by identifying the primary scrambling code of the WCDMA cell. The WSC identifies the WCDMA cell. In block 420, the UE configures the WCDMA compression mode. In WCDMA, the transmission gap is inserted into the WCDMA frame during transmission between the UE and its base station. To obtain the transmission gap, the WCDMA is truncated. The information section of the frame, also And set it to "compressed mode". At block 430, the UE receives the first measurement control message from the network (MCM^the MCM includes the first list of GSM neighbor cells. After block 430, at block 430 Block 440, during WCDMA compression mode, the UE obtains information and measures signal quality from each of the GSM neighbor cells in the first list. In one aspect, the obtained information includes a frequency offset And timing information. In one aspect, the signal quality is based on power measurements, signal to noise ratio, bit error rate, frame error rate, etc. At block 445, the UE records the GSM phase in the first list. Information of the identification code, frequency offset and timing of each of the neighboring cells, and maintaining the frequency offset and the timing information duration time period T. Therefore, each of the GSM neighboring cells in the first list The identity of the subscriber remains as part of the UE record. To add another radio link to the active set, a report event 1A is triggered. Event 1A informs the network (eg, UTRAN) that the new WCDMA cell has reached a predetermined power. Threshold Thpwr power level* to the new WCD The MA cell assigns a primary scrambling code B (PSC B) different from PSC A. At block 45 0, the UE reports PSC B 135012.doc -22- 201012260 piece 1A to indicate that the new wcdma cell with psc B has a high At the power level of the power threshold Thpwr, and thus the new wcdma cell can serve as a handover private cell. From the network point of view, the network receives the event 1A report from the UE" after block 450, Block 46 does not receive an ActiveSetUpdate (ASU) message from the network to add a new WCDMA packet with pSC B to the active set. At block 47, a second (10) having a second list of GSM neighbor cells is received from the network. In the block, uE compares the identification code of each of the GSM neighboring cells in the second list with the identification code of each of the GSM cells of the first list (which is recorded in the list from the previous neighboring cell) In the updated (10) record, the comparison from the block is complete, if no cell in the GSM neighboring cell of the second list is included in the first list of the neighboring cell (that is, the part of the ue record of the non-GSM neighboring cell) And then, at block 49〇' UE, gather information about at least one of the gsm neighbor cells in the second list, such as frequency offset and timing information. In block block 'from block 480 Comparing, if at least one of the gsm neighboring cells in the second list is included in the first list of the GSM neighboring cells (i.e., has been listed as part of the UE record), then (10) is determined in its immortal record. Whether the information about the at least one GSM neighboring cell from the second list (such as frequency offset and timing information) has less than the time period T "aging", determining that the UE record is from the second The time limit for at least one of the list to delete the information of the neighboring community No less than the time period. Those skilled in the art will appreciate that the value of time period T can be selected based on system parameters, application characteristics, and/or user selection without affecting the scope and spirit of the present invention. Doc • 23· 201012260 After block 495, at block 499, if the aging of the information is less than the time period τ, the UE uses the information to locate the at least one gSM neighbor cell from the second list. Therefore, the UE learns that it is decodable. Information about the at least one GSM neighbor cell (eg, frequency offset and timing information) and associated base station identification code (BSIC). In the GSM network, the BSIC is broadcast in the synchronization channel (SCH) to identify Network color code (NCC) and base station color code (BCC). In one aspect, one or more of the UE measures as shown in Figure 4 are based on network fingerprint commands. The network as described in the flow chart of Figure 4 is implemented by a processor residing outside the UE and in communication with the UE. Further, those skilled in the art will understand the steps of the flow chart illustrated in Figure 4. Some interchangeable orders without affecting the scope of the invention It will be appreciated by those skilled in the art that various illustrative components, logic blocks, modules, circuits, and/or algorithm steps described in connection with the examples disclosed herein can be implemented as electronic hardware, firmware, or computer. Software or a combination thereof. To clearly illustrate this interchangeability of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and/or algorithms have been described generally in terms of functionality. Steps. Whether the functionality is implemented as hardware, firmware, or software depends on the particular application and design constraints imposed on the overall system. The skilled person can implement the described functionality in different ways for each particular application. However, such implementation decisions should not be interpreted as causing a departure from the scope or spirit of the invention. For example, in a hardware implementation, the processing unit can be implemented in one or more special application integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DspD), programmable logic Device 135012.doc -24 201012260 (pld), field programmable gate array (FPGA), processor, controller microcontroller, microprocessor, other electronic unit designed to perform the functions described herein or Within the combination. Software implementations can be implemented by modules (e.g., programs, functions, etc.) that perform the functions described herein. The software code can be stored in the memory unit and executed by the processor unit. In addition, the various (four) flow diagrams, logic blocks, modular subtraction/or algorithm steps described in the text of the present invention may also be encoded as computer readable instructions embodied in any computer readable medium known in the art. on. In one example, the illustrative components, flowcharts, logic blocks, modules, and/or algorithm steps described herein are implemented or executed by one or more processors. In the aspect, the processor is interfaced with a memory that is to be executed by the processor to implement or execute the data, metadata, and programs of the various flowcharts, logic blocks, and/or modules described herein. Instructions, etc. Figure 5 illustrates an example of a device 5A including a processor 51 in communication with memory 520 for performing processing for maintaining frequency offset and timing information during neighbor cell list updates. In one example, device 500 is used to implement the algorithm illustrated in FIG. In one aspect, memory 520 is located within processor 51A. In another aspect, memory 520 is external to processor 5 10. • Figure 6 illustrates an example of a device 600 suitable for maintaining information on frequency offsets and timing during neighbor cell inventory updates. In one aspect, the device 6 is implemented by at least one processor 'the at least one processor at blocks 61〇, 62〇, 63〇, 640, 645, 650, 660, 670, 680, 690, 695 and 699 includes one or more modalities 1350l2.doc -25· 201012260 configured to provide information for maintaining frequency offsets and timings during neighbor cell inventory updates as described herein, and For example, each module includes hardware, firmware, software, or any of them, and in any aspect, device 600 can also be implemented by at least one memory in communication with at least one processor. The above description is provided to enable any person skilled in the art to make or use the invention. Various modifications to the above-described aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an example access node/UE system. Figure 2 illustrates an example flow diagram of an example of a wireless communication system supporting a plurality of users. The interactive radio access technology (Τ) transitional wireless communication is used to maintain timing information during neighbor cell inventory updates. The offset and FIG. 5 illustrate a processor that includes a processor in communication with the memory for performing the information for the more recent::instance' timing of the neighboring cell list ^ maintaining the frequency offset and FIG. 6 illustrating a suitable An example of a device for information on the update period and timing of neighboring cell lists. ] Maintaining the buccal rate offset [Main component symbol description]

100 Access Node/UE System 101 Access Node 110 Transmit (TX) Data Processor A 120 Symbol Modulator A 1350l2.doc • 26- 201012260 130 Transmitter Unit (TMTR) A 140 Antenna 150 Receiver Unit A 160 Symbol Demodulation Converter C 170 RX Data Processor A 180 Processor A 201 User Equipment (UE) 210 Antenna Reference w 220 Receiver Unit (RCVR) B 230 Symbol Demodulation B 240 Processor B 250 RX Data Processor B 260 TX data processor B 270 symbol modulator D 280 transmitter unit B ^ 290 wireless communication system 292A cell 292B cell • 292C cell 292D / J, area 292E / J, 292F cell 292G cell 296A access user equipment ( UE) 135012.doc -27- 201012260

296B Access User Equipment (UE) 296C Access User Equipment (UE) 296D Access User Equipment (UE) 296F Access User Equipment (UE) 296G Access User Equipment (UE) 296H Access User Equipment (UE) 2961 Access User Equipment (UE) 296J Access User Equipment (UE) 298A Base Station (BS) / Base Transceiver Station (BTS) 298B Base Station (BS) / Base Transceiver Station (BTS) 298C Base Station (BS) / Base Transceiver Station (BTS) 298D Base Station (BS) / Base Transceiver Station (BTS) 298E Base Station (BS) / Base Transceiver Station (BTS) 298F Base Station (BS) / Base Transceiver Station (BTS) 298G Base Station (BS) / Base Transceiver Station (BTS) 300 Wireless Communication System 310 User Equipment 320 Base Station (BS) A 330 Base Station Controller (BSC) A 335 Adjacent Cell List Generation 340 core network 350 base station controller (BSC) B 360 base station (BS) B 500 device containing processor 510 135012.doc -28- 201012260 510 520 610 620 630 640 ❹ 645 650 660 670 680 690 processor Memory is used in multiple WCDMA cells At least one component of the primary scrambling code A (PSC A) is configured to configure a component of the WCDMA compressed mode for receiving a first measurement control message (MCM) having a first list of GSM neighbor cells for use in A means for obtaining information on the frequency offset and timing of each of the GSM neighbor cells in the first list during WCDMA compression mode is used to record the identification of each of the GSM neighbor cells in the first list The information of the code, frequency offset and timing and maintaining the frequency offset and the information duration of the time period T are used by the means for reporting event 1A for receiving an Active SetUpdate (ASU) message to place a new WCDMA cell with PSC B A component added to the active set for receiving a second measurement control message (MCM) having a second list of GSM neighbor cells for comparing each of the GSM neighbor cells in the second list A means for identifying the identification code of each of the GSM neighboring cells in the first list in the UE record for collecting information about information from at least one GSM neighboring cell of the second list 135012.doc -29- 201012260 695 means 699 for determining whether the time offset of the frequency offset and the timing is less than the time period T for using the information of the frequency offset and timing to locate the component from the at least one GSM neighboring cell of the second list Reference 135012, doc • 30·

Claims (1)

201012260 X. Application for Patent Park: A method for maintaining information on frequency offset and timing during the update of the neighboring cell list, which includes the following steps: obtaining the frequency shift of each of the first plurality of GSM neighboring cells and one time The information of the sequence; the partial record of the first plurality of GSM neighbor cell codes, the frequency biased; 5 兮 皮, each of the - identify the time 庠 = and maintain the frequency offset and ❿ ❹ / timing information in Receiving a time period T in a record; receiving a list of the second plurality of GSM neighbor cells; comparing one of the second plurality of GSM neighbor cells with the first plurality of the records An identification code in the GSM cell; @ if the neighboring cell from the second plurality of GSM neighboring cells (4) is not in the record, the information about the frequency offset and timing of the GSM neighboring cell is raised; and if If the at least one neighboring cell of the second plurality of GSM neighboring cells is in the record, determining whether the time offset of the frequency offset and the timing information of the at least one (four) neighboring cell is less than the time period. 'And if The aging is less than the time period T' to locate the at least one (four) neighboring cell. 2. The method of the requester' further comprising receiving a measurement control message comprising a list of the first plurality of GSM neighboring cells ((10)(4). The method of claim 2 further comprises configuring a compression mode, wherein Obtaining information on frequency offsets and timings of the plurality of GSM neighboring cells from the first complex during the WCDMA compression mode. 4. The method of claim 3, further comprising a complex WCDMA of the add-action set At least one of the cells obtains a primary scrambling code (psc). 5. The method of request 4 includes 'initial-received report-event 1A to indicate that a new WCDMA cell having a different primary scrambling code has - higher than a power level of a predetermined power threshold Thpwr, wherein the new wcdma cell is not part of the plurality of WCDMA cells. ❿6· * The method of request 5 includes a receive-AetiveSetUpdate message to the new WCDMA cell Add to the set in the action 7. As in the method of request item, it causes the time to be one of the maximum durations allowed by reconfirming the information of the frequency offset and timing. a user device including a processor and a memory, the memory containing code executable by the processor to perform the following steps: obtaining a frequency offset of each of the first plurality of GSM neighbor cells and a time series information; ❹ $ record the identification code of the first to the plurality of (four) neighboring cells, the frequency offset and the information of the timing, and maintain the frequency offset and the information of the Receiving a time period of a record; receiving a list of the second plurality of GSM neighbor cells; comparing an identification code of each of the second plurality of GSM neighbor cells with the first plurality of the records The identification code of each of the GSM cells; if the GSM neighboring cell from one of the second plurality of GSM neighboring cells is not in the record, collecting frequency spears about the neighboring cell of the gsm ^ 135012.doc 201012260 and timing information; and right at least one GSM neighboring cell from the second plurality of GSM neighboring cells in the record Yin, determining the frequency offset with respect to the at least one gsm neighboring cell and Information on the timing Whether the aging is less than the time period T, and if the aging is less than the time period T, locating the at least one GSM neighboring cell. 9. The user equipment of claim 8, wherein the memory further comprises for receiving - including The code of the measurement control message (MCM) of the list of the first plurality of GSM neighboring cells. 10. The user equipment of claim 9, wherein the memory further comprises a configuration-code of the WCDMA compression mode Information from the frequency offset and timing of the first plurality of GSM neighbor cells is obtained during the WCDMA compression mode. 11. The user equipment of claim H), wherein the second plurality of GSM neighboring cells receive a second measurement control message (MCM) 触发12 triggered by the -Event 1A report, A wireless communication device that maintains information on frequency offset and timing during update of a neighbor cell list, comprising: means for obtaining information on a frequency offset and a timing of each of the first plurality of GSM neighbor cells For recording each of the first plurality of GSM neighboring cells - the identification code, the frequency offset, and the information of the timing and ensuring (4) ^ and the information of the timing in a record for a period of time τ a component for receiving a second plurality of GSM neighboring cells - a list of components. 1350I2.doc 201012260 for comparing one of the second plurality of Gsm neighbor cells with an identification code and the record a component of the identification code of each of the first plurality of GSM cells; configured to determine information about the frequency offset and the timing of at least GSM neighbor cells from the second plurality of GSM neighbor cells One time 疋 no!, during this time period τ And wherein the at least one neighboring cell is in the record; and ❹ 13 14. ❸ 15. 16. means for locating the at least one neighboring cell from the second plurality of gsm neighboring cells The time offset of the frequency offset and the information of the timing is less than the time period τ. The wireless communication device of claim 2, further comprising means for arranging the frequency offset and timing of the GW neighboring cells from the first plurality of GSM neighboring cells, Where the GSM neighbor cell is not in the record. Further included is a measurement control message for receiving a list of packets, such as the wireless communication device of claim 13, including the components of the first plurality of GSM neighbor cells (MCMs). The wireless communicator device of claim 14 further includes means for configuring a WCDMA compression mode, wherein the frequency offset from the first plurality of GSM neighboring cells is used in the system. Obtained during this WCDMA compression mode. A wireless communicator of the item 12, the left part of which is a mobile phone, a computer having connectivity to the beginning, the Internet, a WiFi compatible device or a WiMAX compatible device. One of them. I350I2.doc 201012260 17. A computer program recorded on a computer readable medium, comprising the steps of: obtaining information on a frequency offset and a timing of each of the first plurality of GSM neighboring cells; Recording, for each of the first plurality of GSM neighboring cells, an identification code, the frequency offset, and information of the timing, and maintaining the frequency offset and the information of the timing in a record for a period of time τ ; receiving a list of one of the first plurality of GS Μ neighboring cells; comparing one of the second plurality of GSM neighboring cells with an identification code and the first plurality of GSM cells in the record Determining each of the stone horses; determining whether the frequency offset of the frequency offset and the timing information of the at least one GSM neighboring cell from the second plurality of GSM neighboring cells is less than - time period T' At least __(7) river neighboring cells are in the record; and φ locating the at least one GSM neighboring cell from the second plurality of GSM neighboring cells, wherein the time offset of the frequency offset and the timing information is less than the time Segment T. 18. The computer program of claim 17, further comprising the step of: information on the frequency offset and timing of a GSM neighboring cell from the second plurality of GSM neighboring cells of the second ray. In this record. 19. The computer program of claim 18, wherein the step of receiving-receiving __ includes the measurement information (mcm) 135012.doc 201012260 of the list of the plurality of GSM neighboring cells. 20. The computer program of claim 19, further comprising the step of configuring a WCDMA compression mode, wherein information from the frequency offset and timing of the first plurality of GSM neighbor cells is obtained during the WCDMA compression mode. 135012.doc