CN1783876A - System and method for realizing packet data polymerized protocol function - Google Patents
System and method for realizing packet data polymerized protocol function Download PDFInfo
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Abstract
This invention relates to a system and method for realizing PDCP function. It contains UE, RAN and CN with PDCP entity, wherein the UE compressing message head to form PDCP-PDU and transmitting to CN through RAN, or decompressing message head to obtain data package, CN receiving UE transmitted PDCP-PDU through RAN and compressing message head to obtain data package, transmitting said data package to external network, or compressing received data package received from external network to form PDCP-PDU, transmitting to UE through RAN.
Description
Technical field
The present invention relates in universal mobile telecommunications system (UMTS), handle the technology of Radio interface protocols, particularly a kind of system and method for in UMTS, realizing packet data polymerized agreement (PDCP) function.
Background technology
At present 3-G (Generation Three mobile communication system) based on standard mainly contain Wideband Code Division Multiple Access (WCDMA) (WCDMA) communication system, code division multiple access (CDMA) 2000 communication systems and three kinds of standards of TD-SCDMA communication system.
UMTS is the 3-G (Generation Three mobile communication system) that adopts the WCDMA air interface technologies, also UMTS is called the WCDMA communication system usually.The structure of UMTS is as shown in Figure 1: comprise subscriber equipment (UE, User Equipment), Radio Access Network (RAN, Radio Access Network) and core network (CN, Core Network).RAN is UMTS Terrestrial radio access network (UTRAN), and RAN is used to handle all and wireless function associated, and CN handles that all voice calls are connected with data in the UMTS, and the exchange of realization and external network and routing function.CN is from being divided into circuit commutative field (CS, Circuit Switched Domain) and packet-switched domain (PS, Packet Switched Domain) in logic.
The structure of RAN as shown in Figure 2, UTRAN comprises one or several RNS (RNS).A RNS is made up of a radio network controller (RNC) and one or more Node B (NodeB).Interface between RNC and the CN is the Iu interface, and NodeB is connected by Iub interface with RNC.In UTRAN inside, interconnected by the Iur interface between the RNC, RNC can be divided into source RNC (SRNC) and Target RNC (TRNC) at UE.RNC is used for distributing and is attached thereto with control or the Radio Resource of relevant NodeB.NodeB then will send UE to or will be transferred to RNC by Iub from the data flow that the Uu interface transmits by the Uu interface from the data flow that Iub interface transmits, and NodeB also participates in a part of RRM simultaneously.
Comprised multiple Radio interface protocols in the Radio interface protocols stack frame between UE and the CN.Radio interface protocols stack between UE and the CN is as shown in Figure 3: wherein, PDCP finishes the header compress/decompress function at PS territory business, and purpose is in order to save the wireless bandwidth resource of wave point between UE and the CN, to improve the efficient of transmission data.The PDCP entity is separately positioned among UE and the RAN, can be set to one or more, each PDCP entity uses some kinds of header compress/decompress algorithms, different PDCP entities may include identical header compress/decompress algorithm, thereby sets up the header compress/decompress algorithm of number of different types in the PS territory.The function of PDCP entity comprises: the header compress/decompress of carrying out packet in UE and RAN respectively; Transmitting user data will be forwarded to Radio Link control (RLC) layer by the PDCP protocol Data Unit (PDCP-PDU) that packet generates; When carrying out SRNS Serving Radio Network Subsystem (SRNS) lossless migration, the sequence number of the packet correspondence of its maintenance and cached data packet are forwarded to TRNC among the RAN.
Usually, the PDCP entity is arranged among the RNC of RAN, as the SRNC neutralization that is arranged on RAN is arranged among the TRNC of RAN.
After UE has set up RAB (RAB), just can use the header compress/decompress function of PDCP entity, its concrete steps as shown in Figure 4:
PDCP entity among step 401, the UE adopts PDCP, and packet is carried out header-compressed, sends the rlc layer among the UE behind the generation PDCP-PDU to;
Rlc layer among step 402, the UE sends to medium access control (MAC) layer after this PDCP-PDU is increased the RLC header;
MAC layer among step 403, the UE increases the physical layer that sends to UE behind the mac header to the PDCP-PDU that has increased the RLC header;
The physical layer of step 404, UE carries out sending to after the operations such as coded modulation NodeB under the UE to the PDCP-PDU of this increase RLC header and mac header, and NodeB carries out sending to after the operations such as coded demodulation the MAC layer among the RNC to this PDCP-PDU;
MAC layer among step 405, the RNC is removed the mac header of the PDCP-PDU that step 404 sends, sends to rlc layer among the RNC with removing PDCP-PDU behind the mac header;
Behind the RLC header of the PDCP-PDU that rlc layer removal step 405 among step 406, the RNC is sent, send to PDCP entity among the RNC with removing PDCP-PDU behind mac header and the RLC header, the PDCP entity uses PDCP that PDCP-PDU is carried out header decompression, generates IP packet or PPP information bag;
Fig. 4 is described to be the process that sends packet from UE to the external network, the just process of uplink data sending bag.Send the process of packet from external network to UE, the process that is the process of descending transmission packet and uplink data sending bag is similar, just the PDCP entity among the RNC is responsible for that downlink data packet is carried out the PDCP header-compressed and is formed PDCP-PDU, and the PDCP entity among the UE is responsible for the PDCP-PDU that receives is carried out header decompression.
At present, the PDCP entity is arranged at RNC and UE respectively, though adopting the header compress/decompress technology has saved the bandwidth of transmission link between RNC and the UE, has improved the data transmission efficiency of wave point effectively, but upstream data that transmits between RNC and CN and downlink data remain and adopt the mode of packet to transmit, and do not have the header of compressed data packets.Therefore, the data that the mode of employing packet is transmitted can take the massive band width resource of transmission link between RNC and the CN, reduce the data transmission efficiency of Iu interface between RNC and the CN.
When UE carries out in the zone when mobile, for UE, the RNC of its registration zone is SRNC, and its RNC that moves to the zone is TRNC.At present, the SRNC of UE will carry out lossless migration sometimes, is referred to as the SRNS lossless migration.In carrying out SRNS lossless migration process, PDCP entity among the SRNC will be forwarded to TRNC with the sequence number of the packet correspondence of its maintenance, this packet is the downlink data packet that SRNC has sent to UE, the sequence number of packet correspondence be used for mark those through SRNC sends and UE does not receive packet.After making the SRNS lossless migration, TRNC can determine the packet that has sent and whether be in the state that receives, guarantee that the packet that packet is not lost or will be lost retransmits, the PDCP entity among the SRNC must be forwarded to the sequence number of the packet correspondence of its maintenance among the TRNC.This process is: the PDCP entity among the SRNC sends to PDCP entity among the TRNC with the sequence number of the packet correspondence of its maintenance by the Iur interface.Further, in carrying out SRNS lossless migration process, the uncontrollable external network of SRNC sends downlink data packet by CN to UE, so send to TRNC after the downlink data packet that receives must being cached to the buffer area that sets in advance, be used for behind the SRNS lossless migration, TRNC determines that according to the sequence number of the packet correspondence that sends from the PDCP entity which packet does not send to UE, retransmits this packet.Owing to do not have data transmission link between SRNS and the TRNC, so SRNS with the process that the downlink data packet of buffer memory sends to TRNC is: SRNS is after carrying out lossless migration, SRNC sends to CN with the downlink data packet of buffer memory by the Iu interface, and CN sends to TRNC by the Iu interface with this downlink data packet again.Equally, this can take the massive band width resource of transmission link between RNC and the CN, reduces the data transmission efficiency of Iu interface between RNC and the CN.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of system of the PDCP of realization function, and this system can save the bandwidth resources of transmission link between RNC and the CN when transmits data packets, improves the data transmission efficiency of Iu interface between RNC and the CN.
Another object of the present invention is to provide a kind of method of the PDCP of realization function, this method can be saved the bandwidth resources of transmission link between RNC and the CN when transmits data packets, improves the data transmission efficiency of Iu interface between RNC and the CN.
A further object of the invention is to provide a kind of method of the PDCP of realization function in SRNS lossless migration process, this method can be saved the bandwidth resources of transmission link between RNC and the CN when transmits data packets, improve the data transmission efficiency of Iu interface between RNC and the CN.
According to above-mentioned purpose, technical scheme of the present invention is achieved in that
A kind of system that realizes packet data polymerized agreement PDCP function comprises the UE with PDCP entity, and this system also comprises RAN and CN, this CN have with UE in the PDCP entity of PDCP entity equity, wherein,
UE is used for packet is undertaken forming PDCP-PDU after the header-compressed by self PDCP entity, and this PDCP-PDU is sent to CN by RAN; Perhaps receive the PDCP-PDU that sends from CN by RAN, this PDCP-PDU is undertaken obtaining packet after the header decompression by self PDCP entity;
CN is used to receive the PDCP-PDU that sends from UE by RAN, and this PDCP-PDU is undertaken obtaining packet after the header decompression by self PDCP entity, and this packet is sent to external network; Perhaps the packet that will receive from external network is undertaken forming PDCP-PDU after the header-compressed by self PDCP entity, and this PDCP-PDU is sent to UE by RAN.
Identical in header compress/decompress algorithm in the PDCP entity of described equity and the PDCP entity of UE.
The PDCP entity of described equity is arranged among the GGSN of CN or among the SGSN.
Described RAN comprises the target radio network controller TRNC of UE and the source radio network controller SRNC of UE;
The PDCP entity of described equity has the buffer zone, is used for when the SRNS lossless migration carrying out buffer memory by the PDCP-PDU that SRNC sends to UE, behind the SRNS lossless migration, the PDCP-PDU of buffer memory is sent to TRNC among the RAN.
A kind of method that realizes the PDCP function, this method comprises:
The transmitting terminal of A, packet carries out the PDCP header-compressed and obtains PDCP-PDU, this PDCP-PDU is sent to the receiving terminal of packet by RAN;
The receiving terminal of B, packet obtains packet after the PDCP-PDU that receives is carried out the PDCP header decompression.
The transmitting terminal of described packet is UE, and the receiving terminal of packet is CN.
The receiving terminal of described packet is GGSN or the SGSN among the CN.
The transmitting terminal of described packet is CN, and the receiving terminal of packet is UE.
The transmitting terminal of described packet is GGSN or the SGSN among the CN.
A kind of method that realizes the PDCP function when the SRNS lossless migration is provided with buffer area on the PDCP entity in CN, and this method comprises:
A1, in SRNS lossless migration process, the PDCP entity among the CN is buffered in the PDCP-PDU that CN has sent to UE in the buffer area, the PDCP entity record sequence number in CN, sent and the PDCP-PDU that UE does not receive of this sequence number mark;
B1, after the SRNS lossless migration is finished, the PDCP entity among the CN will obtain from buffer area corresponding to the PDCP-PDU of institute's records series number, and this PDCP-PDU is resend to UE by the TRNC of UE.
From such scheme as can be seen, system provided by the invention is arranged on the PDCP entity that prior art is arranged among the RAN among the CN.UE and the CN of method provided by the invention in the UMTS system, it is the PDCP compression/de-compression function that the sending and receiving end of UMTS system is realized packet header respectively, rather than on this transit node of RNC and UE, realize the PDCP compression/de-compression function of packet header respectively, thereby make system and method provided by the invention when transmits data packets, save the bandwidth resources of transmission link between RNC and the CN, improved the data transmission efficiency of Iu interface between RNC and the CN.In SRNS lossless migration process, the PDCP entity in CN is provided with buffer area, and the downlink data packet that has sent is cached in this buffer area.Behind the SRNS lossless migration, PDCP entity among the CN is determined the PDCP-PDU needs repeating transmission of which institute's buffer memory according to the sequence number of the PDCP-PDU correspondence of being safeguarded that has sent, the PDCP-PDU that needs are retransmitted sends to UE by TRNC, and unlike prior art with CN as transit node from SRNC to CN again to the downlink data packet that has sent of TRNS transmission institute buffer memory, thereby when transmits data packets, saved the bandwidth resources of transmission link between RNC and the CN, improved the data transmission efficiency of Iu interface between RNC and the CN.
Description of drawings
Fig. 1 is the structure chart of UMTS.
Fig. 2 is the structure chart of RAN.
Fig. 3 is the Radio interface protocols stack schematic diagram between UE and the CN.
Fig. 4 uses the method flow diagram of the header compress/decompress function of PDCP entity for after prior art UE set up RAB.
Fig. 5 realizes the system schematic of PDCP function for the present invention.
Fig. 6 is arranged on system schematic among the SGSN for the present invention with reciprocity PDCP entity.
Fig. 7 is arranged on system schematic among the GGSN for the present invention with reciprocity PDCP entity.
Fig. 8 realizes the method flow diagram of PDCP function for the present invention.
Fig. 9 for the present invention when SRNS carries out lossless migration, realize the method flow diagram of PDCP function.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, below lift specific embodiment and, the present invention is described in more detail with reference to accompanying drawing.
The present invention is arranged on the PDCP entity that is provided with among the RNC among the CN, as is arranged among the GGSN or SGSN of CN in order to solve the massive band width problem of resource that takies transmission link between RNC and the CN when the transmits data packets.Like this, be transferred to the upstream data bag of CN or can carry out the PDCP header-compressed at transmitting terminal by UE by the downlink data packet that CN is transferred to UE, carry out the PDCP header decompression at receiving terminal, what make the transmission of Iu interface between RNC and the CN is packet through the PDCP header-compressed, rather than what transmit as prior art is the packet that does not pass through the PDCP header-compressed, thereby saved the bandwidth resources of transmission link between RNC and the CN, improved the efficient of Iu interface transmission data between RNC and the CN.
Fig. 5 realizes the system schematic of PDCP function for the present invention, and as shown in the figure: this system comprises CN500, RAN501 and UE502.
Wherein, be provided with PDCP entity 503 among the UE502, be used for that the packet that will send is carried out the PDCP header-compressed and generate PDCP-PDU, the PDCP-PDU that receives is carried out the PDCP header decompression obtain packet.UE502 sends to RAN501 with the PDCP-PDU that generates, and perhaps receives PDCP-PDU from RAN501.
RAN501 is used for sending to CN500 with receive the PDCP-PDU that comes from UE, perhaps will receive the PDCP-PDU that comes from CN500 and send to UE502.
Be provided with PDCP entity 504 among the CN500 with PDCP entity 503 equities of UE502.The PDCP entity 504 of equity is identical with PDCP entity 503 status of living in, and the header compress/decompress algorithm in the PDCP entity 504 of equity and the header compress/decompress algorithm of PDCP entity 503 can be identical or inequality.But in communication process, the PDCP entity 504 of equity uses the header compress/decompress algorithm identical with the header compress/decompress algorithm of PDCP entity 503, be used for that the packet that will send is carried out the PDCP header-compressed and generate PDCP-PDU, the PDCP-PDU that receives is carried out the PDCP header decompression obtain packet.CN500 sends to RAN501 with the PDCP-PDU that generates, and perhaps receives PDCP-PDU from RAN501.
When carrying out the SRNS lossless migration, the present invention is provided with the buffer zone in the PDCP of the equity of CN500 entity 504, be used to store the PDCP-PDU that has sent.The PDCP entity 504 of equity is also safeguarded the sequence number of the PDCP-PDU correspondence that has sent simultaneously, behind the SRNS lossless migration, equity PDCP entity 504 is determined the PDCP-PDU that will retransmit according to the sequence number of the PDCP-PDU correspondence of safeguarding that has sent, and obtains the PDCP-PDU that will retransmit and the TRNC by UE retransmits to UE from the buffer zone.
The present invention can be arranged on the PDCP entity 504 of the equity among the CN500 among the SGSN or GGSN among the CN, respectively as shown in Figure 6 and Figure 7.
At UE one or more PDCP entity can be set, each PDCP entity uses some kinds of header compress/decompress algorithms, different PDCP entities can include identical header compress/decompress algorithm, thereby sets up the header compress/decompress algorithm of number of different types in the PS territory.Correspondingly, one or more reciprocity PDCP entities also can be set in CN.
When CN and UE carried out normal transceive data bag, Fig. 8 realized the method flow diagram of PDCP function for the present invention, and its concrete steps are:
PDCP entity among step 801, the UE adopts PDCP, and this packet is carried out header-compressed, sends the rlc layer among the UE behind the generation PDCP-PDU to;
Rlc layer among step 802, the UE sends to the MAC layer after this PDCP-PDU is increased the RLC header;
MAC layer among step 803, the UE increases the physical layer that sends to UE behind the mac header to the PDCP-PDU that has increased the RLC header;
The physical layer of step 804, UE carries out sending to after the operations such as coded modulation NodeB under the UE to the PDCP-PDU of this increase RLC header and mac header, and NodeB carries out sending to after the operations such as coded demodulation the MAC layer among the RNC to this PDCP-PDU;
MAC layer among step 805, the RNC is removed the mac header that PDCP-PDU that step 804 sends increases, and sends to rlc layer among the RNC with removing PDCP-PDU behind the mac header;
After rlc layer among step 806, the RNC is removed the RLC header of the PDCP-PDU that step 805 sends, the PDCP-PDU that removes behind mac header and the RLC header is sent to PDCP entity among the CN by the GTP-U tunnel through the Iu interface;
PDCP entity among step 807, the CN uses PDCP that PDCP-PDU is carried out header decompression, obtains IP or PPP information bag, and this IP or PPP information bag are sent to external network.
What Fig. 8 narrated is the whole process that sends the upstream data bag from UE to the external network, equally, the process of the process of transmission downlink data packet and Fig. 8 narration is similar from the external network to UE, just the PDCP entity among the CN is responsible for that the downlink data packet of sending from external network is carried out the PDCP header-compressed and is generated PDCP-PDU, and the PDCP entity among the UE is responsible for the PDP-PDU that receives is carried out the PDCP header decompression.
Because the present invention is arranged on the PDCP entity among the CN, thus when SRNS carries out lossless migration, set in advance the buffer zone on the PDCP entity in CN, the method flow diagram of realization PDCP function as shown in Figure 9:
After PDCP entity among step 901, the CN received the SRNS lossless migration request that SRNC sends, the PDCP entity started the sequence number function of the PDCP-PDU correspondence that existing maintenance sent, and the PDCP-PDU that will send carries out buffer memory;
PDCP entity among step 903, the CN receives the SRNS lossless migration of SRNC transmission and finishes message, determine according to the sequence number of safeguarding the PDCP-PDU correspondence sent whether the PDCP-PDU of buffer memory is retransmitted, and the TRNC of the PDCP-PDU that will retransmit by UE resends to UE.
According to the definite the process whether PDCP-PDU of buffer memory is retransmitted of the sequence number of safeguarding the PDCP-PDU correspondence that has sent be: whether the PDCP-PDU that judges institute's buffer memory is corresponding to the sequence number of safeguarding, if, judgement must be retransmitted, if not, be judged to be and can not retransmit.
When SRNS carries out lossless migration, the present invention has just carried out processing as described in Figure 9 to the descending PDCP-PDU that CN will send to UE, and the up PDCP-PDU that sends to CN from UE is not carried out the described processing of Fig. 9, promptly SRNS lossless migration process does not influence UE and sends up PDCP-PDU.
Compare with prior art, the present invention is in SRNS lossless migration process, do not need as transit node CN, from SRNS to CN again to the packet that sent of TRNC transmission buffer in SRNS, but determine that according to the sequence number of the PDCP-PDU correspondence of safeguarding at the PDCP entity that has sent the PDCP-PDU needs that sent of which institute's buffer memory retransmit, the PDCP-PDU that needs are retransmitted directly sends to UE by TRNC in the buffer zone from the PDCP entity of CN, has saved the bandwidth resources of Iu interface.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of system that realizes packet data polymerized agreement PDCP function comprises user equipment (UE) and core network CN with PDCP entity, it is characterized in that, this system also comprises Radio Access Network RAN, this CN have with UE in the PDCP entity of PDCP entity equity, wherein
UE is used for packet is undertaken forming PDCP protocol Data Unit PDCP-PDU after the header-compressed by self PDCP entity, and this PDCP-PDU is sent to CN by RAN; Perhaps receive the PDCP-PDU that sends from CN by RAN, this PDCP-PDU is undertaken obtaining packet after the header decompression by self PDCP entity;
CN is used to receive the PDCP-PDU that sends from UE by RAN, and this PDCP-PDU is undertaken obtaining packet after the header decompression by self PDCP entity, and this packet is sent to external network; Perhaps the packet that will receive from external network is undertaken forming PDCP-PDU after the header-compressed by self PDCP entity, and this PDCP-PDU is sent to UE by RAN.
2, the system as claimed in claim 1 is characterized in that, identical in the header compress/decompress algorithm in the PDCP entity of described equity and the PDCP entity of UE.
3, the system as claimed in claim 1 is characterized in that, the PDCP entity of described equity is arranged among the general packet radio service system business support node GGSN of CN or among the general packet radio service system gateway support node SGSN.
4, the system as claimed in claim 1 is characterized in that, described RAN comprises the target radio network controller TRNC of UE and the source radio network controller SRNC of UE;
The PDCP entity of described equity has the buffer zone, is used for when SRNS Serving Radio Network Subsystem SRNS lossless migration carrying out buffer memory by the PDCP-PDU that SRNC sends to UE, behind the SRNS lossless migration, the PDCP-PDU of buffer memory is sent to UE by TRNC.
5, a kind of method that realizes the PDCP function is characterized in that, this method comprises:
The transmitting terminal of A, packet carries out the PDCP header-compressed and obtains PDCP-PDU, this PDCP-PDU is sent to the receiving terminal of packet by RAN;
The receiving terminal of B, packet obtains packet after the PDCP-PDU that receives is carried out the PDCP header decompression.
6, method as claimed in claim 5 is characterized in that, the transmitting terminal of described packet is UE, and the receiving terminal of packet is CN.
7, method as claimed in claim 6 is characterized in that, the receiving terminal of described packet is GGSN or the SGSN among the CN.
8, method as claimed in claim 5 is characterized in that, the transmitting terminal of described packet is CN, and the receiving terminal of packet is UE.
9, method as claimed in claim 8 is characterized in that, the transmitting terminal of described packet is GGSN or the SGSN among the CN.
10, a kind of method that realizes the PDCP function when the SRNS lossless migration is characterized in that on the PDCP entity in CN buffer area is set, this method comprises:
A1, in SRNS lossless migration process, the PDCP entity among the CN is buffered in the PDCP-PDU that CN has sent to UE in the buffer area, the PDCP entity record sequence number in CN, sent and the PDCP-PDU that UE does not receive of this sequence number mark;
B1, after the SRNS lossless migration is finished, the PDCP entity among the CN will obtain from buffer area corresponding to the PDCP-PDU of institute's records series number, and this PDCP-PDU is resend to UE by the TRNC of UE.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410096564 CN100518180C (en) | 2004-12-03 | 2004-12-03 | System and method for realizing packet data polymerized protocol function |
| PCT/CN2005/002075 WO2006058501A1 (en) | 2004-12-03 | 2005-12-02 | A system for implementing packet data convergence protocol function and the method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410096564 CN100518180C (en) | 2004-12-03 | 2004-12-03 | System and method for realizing packet data polymerized protocol function |
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| CN1783876A true CN1783876A (en) | 2006-06-07 |
| CN100518180C CN100518180C (en) | 2009-07-22 |
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| CN1913534B (en) * | 2006-08-17 | 2010-12-01 | 华为技术有限公司 | Data processing method and communication equipment |
| WO2011009258A1 (en) * | 2009-07-23 | 2011-01-27 | 中兴通讯股份有限公司 | Method and apparatus for transmitting packet data convergence protocol (pdcp) data |
| CN101997660A (en) * | 2009-08-14 | 2011-03-30 | 中兴通讯股份有限公司 | Method and device for avoiding losing uplink data |
| WO2011085632A1 (en) * | 2010-01-18 | 2011-07-21 | 华为技术有限公司 | Compression and decompression method and apparatus of internet protocol data packet |
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| CN106572198A (en) * | 2015-10-13 | 2017-04-19 | 华为技术有限公司 | MAC (Medium access control) packet header compression method, device and system |
| WO2017096592A1 (en) * | 2015-12-10 | 2017-06-15 | 华为技术有限公司 | Data processing method and device in wireless communications |
| CN107852282A (en) * | 2015-08-21 | 2018-03-27 | 英特尔Ip公司 | PDCP for honeycomb/WLAN polymerization |
| CN110568995A (en) * | 2019-08-30 | 2019-12-13 | 珠海格力电器股份有限公司 | Data migration method and system |
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| DE60103010T2 (en) * | 2001-02-16 | 2005-04-28 | Lucent Technologies Inc. | Subscriber device for a UMTS mobile telephone communication system |
| DE60229482D1 (en) * | 2001-11-24 | 2008-12-04 | Lg Electronics Inc | Method for transmitting packet data in compressed form in a communication system |
| KR100884956B1 (en) * | 2002-08-14 | 2009-02-23 | 엘지전자 주식회사 | Method and system for tansmitting/receiving asymmetric two-way packet data |
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2005
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| CN102131234B (en) * | 2010-01-18 | 2013-12-04 | 华为技术有限公司 | Method and device for compressing and uncompressing internet protocol (IP) data packet |
| WO2011150774A1 (en) * | 2010-07-26 | 2011-12-08 | 华为技术有限公司 | System for implementing mutiple radio access networks (rans) convergence and method thereof |
| US9560547B2 (en) | 2010-07-26 | 2017-01-31 | Huawei Technologies Co., Ltd. | System for implementing multiple radio access networks (RANs) convergence and method thereof |
| US10555206B2 (en) | 2010-07-26 | 2020-02-04 | Huawei Technologies Co., Ltd. | System for implementing multiple radio access networks (RANs) convergence and method thereof |
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| CN107852282A (en) * | 2015-08-21 | 2018-03-27 | 英特尔Ip公司 | PDCP for honeycomb/WLAN polymerization |
| CN106572198A (en) * | 2015-10-13 | 2017-04-19 | 华为技术有限公司 | MAC (Medium access control) packet header compression method, device and system |
| CN106572198B (en) * | 2015-10-13 | 2020-06-02 | 华为技术有限公司 | Media access control packet header compression method, device and system |
| WO2017096592A1 (en) * | 2015-12-10 | 2017-06-15 | 华为技术有限公司 | Data processing method and device in wireless communications |
| CN110568995A (en) * | 2019-08-30 | 2019-12-13 | 珠海格力电器股份有限公司 | Data migration method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100518180C (en) | 2009-07-22 |
| WO2006058501A1 (en) | 2006-06-08 |
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