TW496058B - Technique for providing a secure link in a mobile communication system - Google Patents

Abstract

A technique for providing a secure link when transitioning between pairs of link layer protocol entities in a mobile communication system is disclosed. The first pair of link layer protocol entities includes a first transmitting link layer protocol entity and a first receiving link layer protocol entity. The second pair of link layer protocol entities includes a second transmitting link layer protocol entity and a second receiving link layer protocol entity. The technique is realized by first suspending data transmissions from the first transmitting link layer protocol entity to the first receiving link layer protocol entity, and then initiating data transmissions from the second transmitting link layer protocol entity to the second receiving link layer protocol entity. Unacknowledged segmented data in the first transmitting link layer protocol entity is then tunneled from the first transmitting link layer protocol entity to the first receiving link layer protocol entity through the second transmitting link layer protocol entity and the second receiving link layer protocol entity.

Description

Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 496058 A7 B7 V. Description of the Invention (1) Field of the Invention The present invention is generally related to mobile communication systems, and more specifically, relates to a technology that is the first pair of chains in mobile communication systems. When the road-layer agreement entity switches to a sub-pair link-layer agreement entity, it provides a secure link. BACKGROUND OF THE INVENTION Referring to Fig. 1, a schematic diagram showing a typical cellular communication system 10 is shown. The system 10 includes a core network (CN) 12, a radio access network (RAN) 14, and a plurality of mobile stations (MS) 16. The RAN 14 is divided into a controller node 18 and a Base Transceiver Station (BTS) node 20. Of course, those skilled in the art can recognize that the RAN 14 may be composed of several RANs, each having one or more control nodes 18 and BTS nodes 20. The hierarchical nature of the system therefore allows CN 12 to be connected to several control nodes 18, each control node 18 is connected to several BTS nodes 20, and each BTS node 20 serves one or more MSs 16. Due to the error characteristics associated with the radio interface between MS 16 and the serving BTS node 20, an Automatic Repeat Request (ARQ) protocol can be selectively implemented between MS 16 and RAN 14 to reduce the residual error rate (residual error rate). The function of the ARQ protocol is to handle the consequences of errors (such as due to interference) introduced by the radio interface. However, when the MS 16 moves within the system 10, a handover may occur that results in the execution of a mobile ARQ agreement between different control nodes 18. In order to ensure that no user data is lost during the delivery period, some specific mechanisms must be implemented. There are three known mechanisms to occur between 18 different control nodes. -4- The paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) !!! ------ f ---- --- 丨 Order --------- line (please read the notes on the back before filling this page) 496058 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of Invention (2) ARQ Agreement User data can still be securely protected when submitted. The first mechanism to securely protect user data when ARQ agreement handover occurs between different control nodes 18 has been properly implemented in ACM Journal of Wireless Networks, Vol. 2, No. 1, 1996, pp.l3_25, "Handover in a Micro-Cell Packet Switched Mobile Network" by A. Cohen et al. And ACM / Baltzer Wireless Networks Journal , Vol. 1, 1995, pp. 47-60, as described in "AIRMAIL: A Link-Layer Protocol for Wireless Networks" by E. Ayanoglu et al., When During the handover, the entire agreement state of the ARQ agreement entity in the RAN 14, including state variables and buffer data, is moved from / to the original control node 18 to the destination control node 18. Using this mechanism, the ARQ agreement entity of MS 16 does not need to know when the handover occurs. If a General Packet Radio Service (GPRS) system with two or more Serving GPRS Support Nodes (SGSN's) has a handover between SGSNs, only the download (downlink) buffered data will be restored from the original The SGSN moves to / from the destination SGSN and synchronizes the status of the buffer agreement between the MS 16 and the destination SGSN via handover signaling (see GSM 03.60 "Service Description π"). The main benefits are that unnecessary retransmission of user data through the radio interface is not required, and the ARQ protocol of MS 16 can be unaware of the occurrence of the handover, and also makes implementation cheaper. However, this first mechanism is limited to Delivery in the system, the same configuration with the same 5- This paper size applies to the Chinese National Standard (CNS) A4 specifications (210 X 297 mm) til order --------- line ---- ----- r -------------- (Please read the notes on the back before filling out this page) 496058 A7 _B7_ V. Description of the invention (3) (Please read the notes on the back first咅? Please fill out this page again.) Therefore, in the future, the same RAN may use systems with different ARQ protocol configurations. This will no longer be useful, and protocol data units (PDlTs) of different sizes may be associated with different ARQ protocol configurations. In addition, moving the entire protocol status may be very complicated. The second mechanism is to securely protect user data when ARQ protocol handover occurs between different control nodes 18, especially in the GPRS system. The guarantee is provided by the system having two levels of ARQ protocols. The first ARQ protocol, called the Radio Link Control (RLC) protocol, is implemented in MS 16 and RAN 14 (such as in the base station control station, BSC nodes), and is used to handle errors introduced by the radio interface (see GSM 04.60-Radio Link Control Protocol / Media Access Control). The second type of ARQ protocol is called Logical Link Control , LLC) agreement, implemented between MS 16 and CN 12 (such as at the SGSN node) (see GSM 04.64-Logical Link Control Layer Specification). When handover occurs, it is possible The missing data in the LLC agreement by the ARQ retransmission agreement. When the handover execution, on the other hand, RLC agreements will restart in MS 16 and BSC. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs The main benefit of this second mechanism is that it can handle inter-system handovers. However, the second mechanism has many important disadvantages. For example, some unwanted radio resources are wasted because of the overhead associated with the second ARQ protocol. In GPRS, the extra cost is a Layer 3 (L3) PDU transmission in units of 7 bytes. This can be compared with Van Jacobsen's compressed transmission control protocol (compressed TCP) agreement confirmation, when using point-to-point-6-this paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 496058 A7 B7 5. Invention description (4) The agreement (Pint_t0-pint Protoc1, PPP) will be less than 10 bytes. Therefore, when a TCP acknowledgement is transmitted in an L3 PDU, the size is almost doubled. Another disadvantage of this second mechanism is that in MS 16, the memory and processing cost of the two-tier ARQ protocol is significantly higher than that of a single ARQ protocol. The third mechanism to securely protect user data when ARQ agreement handover occurs between different control nodes 18 has been properly submitted in the European patent application "L2_ARQ agreement handover" filed by R. Ludwig et al. "L2—ARQ Protocol Handover Mechanisms" (Customer Reference No .: Ericsson Technical Document No. UW / T- 98: 289) describes this mechanism 'This mechanism requires a second layer ARQ protocol PDU sender to keep all L3 The L2 PDU of the PDU is in the buffer until the entire L3 PDU is acknowledged. Then, when the handover is performed, all L3 PDUs are moved to the new L2_ARQ agreement entity, and these L3 PDUs are cut into new L2 PDUs and retransmitted. Similar to the second mechanism, the main benefit of the third mechanism is that it can handle handovers between systems. However, the third mechanism has some important disadvantages. For example, additional buffer space is needed because the L2_ARQ protocol PDU sender is required to keep all L2 PDUs carrying L3 PDUs, in the buffer until the entire L3 PDU is acknowledged. Also, when the handover occurs, all L2 PDUs of the L3 PDU will be retransmitted by the new L2_ARQ agreement. Even L2 PDUs that have been acknowledged will still be retransmitted. This is of course not optimization and is one of the main disadvantages of this third mechanism. In view of the foregoing discussion, it is desirable to provide a technology to provide a secure link between the mobile station and the core network. The paper standard for handover or mobile communication system protocols applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love) ------------- €. 丨 丨 (Please read the notes on the back before filling this page) Order --------- Line 1Γ Intellectual Property of the Ministry of Economic Affairs Printed by the Bureau's Consumer Cooperative ^ 6058 Printed by the Consumer Property Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of Invention (5) During the configuration period, the above-mentioned inappropriateness and shortcomings were overcome. More specifically, it is desirable to provide a technology to provide a secure link between the mobile station and the core network. During the handover or mobile communication system protocol reset configuration, the entire state of the ARQ protocol is not transferred. Use the second ARQ protocol level, do not retransmit the confirmed L2-ARQ PDU, and do not need to store the confirmed pDU in the buffer of the transmitting L2__ARQ protocol entity. — Summary of the Invention According to the present invention, a technology is proposed to provide a full link when a first pair of link layer protocol entities is switched to a second pair of link layer protocol entities in a mobile communication system. The first pair of link layer agreement entities includes a primary transmission link entity, which is used to cut data and transmit the cut data, and a primary receive link layer entity that is used to receive data from the primary transmission link layer entity. The cut data and the response confirm the received cut data. The sub-link-layer agreement entity includes the secondary transmission link-layer agreement entity to cut the data, and the secondary receiving link-layer agreement entity to receive the data from the link-layer agreement entity. Information and responses confirm receipt of cut shellfish. Preferably, both the first pair of link layer agreement entities and the second pair of link layer agreement entities are automatic repeat request agreement entities. And > There are several reasons for switching from the first pair of link layer protocol entities to the second pair of link layer protocol entities. For example, the handover of a mobile communication system or the reconfiguration of a mobile communication system. The first pair of link layer agreement entities may use the same agreement as the second pair of link layer agreement entities, or the first pair of link layer agreement entities may have the same agreement as the second pair of link layer agreement entities. If the first pair of link cards can only use the same agreement as the second pair of link layer agreement entities, the first pair of papers will be financially appropriate. --- Order --------- Line ΊΙΡΙ (Please read the notes on the back before filling this page) 496058 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 V. Description of the invention (6) Link layer The agreement entity may still have different settings than the sub-link-layer agreement entity. In a preferred embodiment, the implementation of the present technology may be via the first interrupted data transmission from the primary transmission link layer assisting individual to the primary receiving link layer protocol individual, and then triggering the secondary transmission link Layer protocol individual to the secondary receiving key layer protocol for data transmission. Unconfirmed cut data in the primary transmission * road-layer agreement entity, through the secondary transmission link layer agreement entity and the secondary reception link layer agreement entity, establish a channel from the primary transmission chain ^ layer agreement entity to the primary reception chain Road level agreement entity. According to other aspects of the invention, the first pair of link layer agreement entities may be controlled by at least one primary control agreement entity, and the second pair of link layer agreement entities may be controlled by at least one secondary control agreement entity. The data transmission from the primary transmission = road-level protocol entity to the primary receiving link-level protocol entity may be interrupted by at least one primary control protocol entity, and the data transmission from the secondary transmission chain protocol entity to the secondary receiving link-layer protocol entity May be initiated by at least one sub-control agreement entity. It should be noted that at least one primary control agreement entity and at least one secondary control agreement entity may be the same control agreement entity. According to a further aspect of the present invention, the uncut data that is not transmitted in the primary transmission link layer protocol entity is preferably transmitted from the primary transmission link layer protocol entity to the secondary transmission link layer protocol entity. Another way is that untransmitted uncut data in the primary transmission link layer agreement entity can be cut and then transmitted from the primary transmission link layer agreement entity to the secondary transmission slitter layer agreement entity as a channel ( tunneling). Road ------------------..— 丨 —Order -------- I Blood (Please read the precautions on the back before filling this page) -9 -A7 B7, description of the invention (according to the present invention # _ Μ φ Ψ Ψ 々 step by step, in the transmission layer through the secondary transmission link layer of the road layer agreement: 1: receive the link layer protocol entity established from the primary transmission chain should Switching to the secondary primary link layer protocol entity channel is not transmitted back to the second layer, and the status message can be transmitted from the primary receive link layer protocol to the actual link layer protocol entity. Also, the primary receive link layer protocol ϋ +, Γ may be notified of the end of the establishment of the primary transmission link layer protocol through the secondary transmission link layer protocol entity to the 到, and the 胄 road layer cooperative entity: to: knife,: receiving link layer protocol entity channel The transmission of the non-response was cut. 42. The link layer agreement entity can be controlled by at least one primary control agreement, and the link layer agreement entity can be controlled by at least one secondary control agreement entity. In the primary transmission link layer protocol entity, the number of unconfirmed data blocks will be from at least one primary control protocol to A secondary control agreement entity to notify the primary transmission chain stomach association entity to end the establishment of the primary transmission link layer agreement entity from the primary transmission link layer agreement entity through the secondary transmission link layer agreement entity to the secondary receiving link layer agreement entity The link layer protocol entity channel transmitted the unresponded cut data. Another type is '_' indicates that the number of the unconfirmed tunneied unconfirmed data can be sent from at least one primary control agreement entity to at least one The secondary control cooperation entity notifies the primary receiving link layer agreement entity to end the primary transmission link layer agreement entity to the primary receiving link established by the secondary transmission link layer agreement entity to the secondary receiving link layer agreement entity. Layer protocol entity channel transmits unresponded cut data. There is even another option, an indication that the number of tunneled unconfirmed cut data can be sent from at least one primary control agreement entity to at least one secondary control agreement entity , ----------------- r --- Order --------- ^ (Please read the notes on the back before filling this page) Intellectual Property of the Ministry of Economic Affairs Bureau employee consumption Printed by the company -10- 496058 A7 B7 V. Description of the invention (8) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs: !! :: The level t receiving link layer agreement entity ends the receiving link through the secondary transmission link level The non-response cut data transmitted by the layer protocol entity from the primary transmission chain to the primary receiving link layer protocol entity channel is transmitted. = Invention: a further point of view is that the non-response is transmitted to inform the primary Receiving the link layer protocol 透过, ending the transmission from the secondary fine link layer protocol entity to the secondary receiving link layer protocol entity from the beginning ^ transmission Lin layered «Leqi Kushiro Road layered entity channel 2 sent no response was Before cutting data, the serial number of the last unconfirmed data block in the primary transmission link layer protocol bone: will be passed from the primary transmission key layer protocol entity to the primary receiving link layer protocol entity. The other way is that the '-message' refers to the unconfirmed and cut data before M. The last uncleared and cut data is notified to the primary receiving transmission link layer agreement entity to end the transmission to the secondary receiving through the secondary transmission link layer agreement entity. The actual link layer agreement = the establishment of mutual communication from the primary transmission link layer agreement entity to the primary receiving key layer agreement throughout the body to transmit unsolicited data, can be transmitted from the primary transmission link layer agreement entity to the primary receiving chain The last pass through the layer agreement entity did not confirm the cut data. There is even another option, a message containing an indication of the number of unconfirmed cuts, which can be passed from the secondary transmission layer agreement entity to the secondary receiving link layer agreement entity to notify the primary receiving transmission chain. The routing layer agreement entity ends the transmission from the primary transmission link routing layer protocol entity to the primary receiving link layer protocol f body through the secondary transmission link layer agreement entity to the secondary receiving link layer agreement f body. Information. There is even another option—the message is included in the primary transmission line r --- ^ --------- line. (Please read the precautions on the back before filling this page) 11 Sheets Standards are applicable to China National Standard (CNS) A4 (210 X 297 mm)

I Calendar Ding 4 t 5. Description of the invention (10) The signal to the secondary transmission link layer protocol is implemented. —. Transmission link layer protocol entity to the secondary connection: Link 2: =, through the secondary primary transmission link layer protocol to enable the termination of the establishment of the entity from the non-response to the transmitted data, and Agreement entity channel fixed entity is transmitted to the secondary receiving link layer = secondary transmission link layer agreement layer agreement entity to the secondary receiving key layer agreement; body: secondary: transmission key link layer agreement entity to the primary receiving link and The termination of the cut data from the primary transmission response can be transmitted to the primary receiving link layer agreement entity by the communication channel of the real-world channel. After m 1¾ is further tunneled according to the present invention, w 夂 / ΛΛ does not confirm the cutting of the data. The first pair of link layer agreement entities can choose to be further advanced according to the present invention, and terminated after AA. . —Across the mountains, Ai 0's point of view: 'Sound Coordination in the Primary Transmission Link: Unconfirmed Cutting Data' can be achieved by first transmitting the unconfirmed cutting data from the Primary Transmission Chain: Stereotype to the secondary transmission link layer protocol. Through the secondary transmission link layer agreement entity to the secondary reception link layer ^

== Transport key layer agreement entity to primary receive link layer agreement Ϊ Bone beans read through. The unconfirmed cut data is then transmitted from the sub-I agreement entity to the secondary receiving link layer agreement entity 1, and then the data is sent from the secondary receiving link layer agreement entity to the primary receiving link layer ": the fixed entity. According to the present invention Still further, before the unconfirmed cutting data is transmitted from the secondary transmission link layer agreement entity to the secondary receiving link layer agreement entity, the unconfirmed cutting data may be marked. The unconfirmed cutting data can be consumed by employees of the Intellectual Property Bureau of the Ministry of Economic Affairs Cooperative printed A7 V. Invention description (11) can be marked as in use, for example, in the length indication field in the confirmation model data agreement data, or a special field in the control agreement data unit. According to the present invention, In a further point of view, unconfirmed cutting data may be transmitted from the sub-level transmission link layer protocol entity to the sub- = receiving link layer protocol entity through a dedicated communication link. The unconfirmed cutting data should preferably be transmitted from the sub-level before any higher-level data. Level transmission link layer agreement entity transmission to secondary connection: link layer agreement entity to ensure sequence integrity. According to the present invention, the unconfirmed cut data is typically combined with the original received link layer protocol entity, and the cut data is combined with the cut data and then recombined. The data will then be sent directly to the higher-level agreement entity. Another way; the combined combined data can be sent to the lower-level agreement entity through the secondary receiving link-level agreement entity. In any event, the secondary receiving Before the link layer protocol sends any data to the higher level agreement entity, it is best to pass the recombined f combined data to the higher level agreement entity to ensure the completeness of the sequence. The message to the higher-level agreement entity will notify the secondary receiving link-layer agreement entity to ensure the order ^ integrity. Brief description of the drawings In order to facilitate a complete understanding of the present invention, please refer to the accompanying drawings. These diagrams should not be inferred as β The invention is limited, but it can only be used as an example. The picture shows the outline diagram of the cellular operation of the Turkish operation, including the core network (CN), radio access Road (RAN), and several mobile stations (MS). Solid 6, as shown in the general ten stacks (generic protocol stack) for exhibition ----------------- r --- Order --------- line (Please read the notes on the back before filling this page)-.

A7 B7 12 V. Description of the invention (:, in the cellular communication system according to the present invention, special agreement on the same level.

According to the present invention, FIG. 3 is a schematic diagram of a flood control system including a CN, two different RANs, and an MS, < 弋, which involves a technology to be used between the two s and 0? ^. For secure links, reconfiguration periods during delivery scenarios or agreements. Figure 4 is a private flow diagram, which shows that data is transmitted between two L2-ARQ protocol entities through the air interface.豕 本 毛 月, Figure 5 is a flow chart showing the transmission of data through two interfaces between two new l2_ARq frames, after the delivery or reconfiguration of the L2-ARQ cooperative entity. FIG. 6 is a transmission diagram (μ 卯 α called chart) used for a delivery situation according to the present invention. FIG. 7 is a diagram showing a format of an L2_ARQ Acknowledged Mode Data (AMD) PDU according to the present invention. Fig. 8 shows the format of an L2-ARQ control PDU according to the present invention. Fig. 9 is a schematic diagram of a typical agreement entity processing device, according to the present invention, for implementing a transmission method involving handover or agreement reconfiguration in a mobile communication system. Detailed description of a more suitable embodiment. With regard to FIG. 2, a general protocol stack is shown, which will be used in this detailed description to refer to different hierarchical layers used in the cellular mobile communication system operating according to the present invention. However, it should be noted that the present invention is not limited to the use of any one agreement at any different level. This paper size applies the Chinese National Standard (CNS) A4 specification (21G X 297 mm) " " ----—- |||| --------- ^ --------- (Please read the precautions on the back before filling out this page) Employees ’Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs Printed 496058 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of Invention (13). For example, the L3 layer is used to refer to any network protocol, such as the Internet Protocol (IP). However, the L3 layer may also include a framing protocol, such as the Point-to-Point Protocol (PPP). The L3 layer may further include a control plane protocol, such as Radio Resource Control (RRC), which is used for Universal Mobile Telecommunication System (UMTS). Therefore, the L3 layer is a protocol for transferring any protocol data unit (PDU) to the lower layer, in this case, the L2_ARQ layer. The L2_ARQ layer is used to refer to link layer protocols, such as Radio Link Control (RLC), which may cut L3 PDUs into smaller pieces of L2_ARQ PDUs or / and concatenate many L3 PDUs into L2__ARQ PDUs also implement functions based on these L2_ARQ PDUs. No matter what agreement the L2_ARQ layer represents, the L2_ARQ agreement follows the retransmission of the L2_ARQ PDU. For example, for any type of ARQ, the sender L2_ARQ must buffer each L2 ARQ PDU until the receiver L2 ARQ directly confirms that the same PDU was received. When an acknowledgement is received, the sender L2_ARQ is allowed to delete the acknowledged L2_ARQ PDU from its transmit buffer. The L2_ARQ protocol will have many different modes of operation for higher layer data transmission (ie, L3 PDUs), such as unreliable, semi-reliable, and fuiiy reliable. The latter two modes may be in-sequence or out-of-sequence delivery jobs. The L1 layer is a physical layer on the radio interface. It can be -16- This paper size applies to China National Standard (CNS) A4 specifications (21 × 297 mm) -------------------- Order ----- ---- Line (Please read the note on the back? Matters before filling out this page) 496058 A7 B7 V. Description of the invention (14) Any radio transmission technology is used in today or future mobile communication networks (such as GSM, UMTS, Or wireless LAN). (Please read the notes on the back before filling out this page) In the application of the current state-of-the-art mobile communication system, there are two peer entities of the L2_ARQ agreement, one at the mobile station (MS ) And one on the radio access network (RAN). Examples of this system are the Global System for Mobile Communication (GSM) / General Packet Radio Service (GPRS), and the UMTS system, and the L2_ARQ agreement between them is the RLC agreement. With reference to FIG. 3, a cellular communication system 100 is illustrated, which will be used in this detailed explanation to describe a technique according to the present invention for providing a secure link between MS and CN, retransmitting in a handover scenario or L2_ARQ agreement. Set the duration of the configuration. The system 100 includes a CN 102 connected to two different RANs 104, and an MS 106. As shown in FIG. 3, the L3 PDU is transmitted between the MS 106 and the CN 102 according to the different L2_ARQ protocols currently using the RAN 104. The techniques described in this detailed explanation are not limited to the number of RAN 104 connected to CN 102. That is, any number of RANs 104 may be allowed by the techniques described herein. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs It is assumed that there is peer-to-peer communication between any two L2_ARQ agreement entities, and that all of them involve different RAN 104. The peer entity executes on the MS 106 and each network node involved in the RAN 104. It is also assumed here that the handover will be in one RAN 104 (intra-system) and between different types of RAN 104 (inter-system). In each case, when the delivery occurs, -17- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 496058 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the Invention (15) The execution point of the L2—ARQ agreement entity can be moved to a new entity network node, and the new L2_ARQ agreement entity is started to continue to communicate with the new peer L2_ARQ. An old restart / restart L2-ARQ agreement entity is optionally used. After the delivery or L2_ARQ agreement reconfiguration occurs (such as the radio access bearer, Radio Access Bearer, RAB reconfiguration), the unconfirmed L2_ARQ PDU in the original sender L2_ARQ agreement entity can pass the new L2_ARQ agreement entity Tunnel to the old receiving L2_ARQ agreement entity. That is to say, when handover or L2_ARQ agreement reconfiguration occurs, the old L2_ARQ agreement entity enters a tunneling state, so there is no need to perform any ARQ function but still communicate data through the new L2_ARQ agreement entity. In this tunneling state, the old L2_ARQ PDU is tunneled to the old receiving L2_ARQ agreement entity through the new L2_ARQ agreement entity, which reassembles the old L2_ARQ PDU back to L3_PDU and passes it to the receiving L3 agreement entity. After all the old L2-ARQ PDUs have been tunneled to the old receiving L2-ARQ protocol entities through the new L2-ARQ protocol entities, reassembled back to the L3 PDUs, and then passed to the receiving L3 protocol entities, the old L2_ARQ protocol entities are terminated .

The above technology requires that the complete L3 PDU is transmitted through the old transmitting L2_ARQ protocol entity or through the new transmitting L2_ARQ protocol entity. Therefore, the last PDU in the old transmitting L2_ARQ agreement entity consists of the last part of the old L3 PDU and possible padding. On the receiving side, the new receiving L2_ARQ agreement entity receives the new L2_ARQ PDU from the new transmitting L2_ARQ agreement entity and reassembles it back to the L2_ARQ SDU. The new L2_ARQ agreement entity must distinguish the L2_ARQ containing the new L3 PDU. -18- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm)%! 丨 Order --------- Line- Win (please read the note on the back? Matters before filling out this page) Printed by the Employees' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 496058 A7 B7 V. Description of the invention (16) SDU and L2 ARQ SDU including the old L2 ARQ PDU that is transparent. This can be done by marking the PDU and / or SDU or by sending in other ways. The new L2 ARQ PDU containing the tunneled old L2-ARQ PDU is reassembled into the old L2-ARQ PDU and forwarded to the old receiving L2_ARQ agreement entity. The new L2_ARQ PDU containing the new L3 PDU is reassembled into an L3 PDU and delivered to the receiving L3 agreement entity. For the above technologies, please refer to FIG. 4 and FIG. 5 for more understanding. Figure 4 shows the transfer of data between two L2_ARQ protocol entities via the air interface. The transmitting L2_ARQ agreement entity (ie L2_ARQ 1 a) and the receiving L2_ARQ agreement entity (ie L2_ARQ lb) consist of an SDU data buffer 110 and a PDU data buffer 112. It should be understood that these buffers are only logical buffers for explaining the present invention. The data in the SDU data buffer area 110a of the transmitting L2_ARQ protocol entity is higher-level data (that is, L3 PDU). This data has not been cut into L2_ARQ PDUs or transmitted by the transmitting L2_ARQ protocol entity via the air interface (ie, L2_ARQ la). The L2_ARQ protocol entity PDU data buffer 112a is composed of L2-ARQ PDUs. A PDU encapsulates a part or the entire SDU. This is called segmentation. If several SDUs are part of a PDU, then these SDUs are called concatenated within the PDU.

It is assumed here that the SDU is located in the transmitting L2_ARQ protocol entity SDU data buffer area 110a until it is cut and may be concatenated and forwarded to the transmitting L2_ARQ protocol entity PDU data buffer 112a. At that point, the entire SDU is moved to the transmit L2_ARQ protocol entity PDU data buffer U2a. PDU transmitted from the transmitting L2_ARQ protocol entity (ie, L2_ARQ la) through the air interface -19- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ------------ -------- Order --------- line (please read the notes on the back before filling out this page) 5. Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economy 496058 A7 B7 Invention Description (17 ) Must be confirmed by the receiving L2_ARQ agreement entity (ie L2_ARQ lb). When the transmitting L2_ARQ agreement entity receives an acknowledgement for a PDU, that PDU is discarded from the transmitting L2_ARQ agreement entity PDU data buffer 112a. Based on the above buffer definition, it can be understood that the transmission L2_ARQ protocol entity PDU data buffer 112a can encapsulate the entire SDU and a part of the SDUs, and it depends on what PDU is confirmed by the transmission L2_ARQ protocol entity. The data in the transmission L2_ARQ protocol entity PDU data buffer 112a will remain there until the entire SDU can be reorganized. At that point, the restructured SDU will be forwarded to the receiving L2_ARQ agreement entity SDU data buffer 110b. Fig. 5 is a diagram showing the transmission of data between two new L2_ARQ protocol entities through the air interface after the delivery or after the L2_ARQ protocol entity reconfigures according to the present invention. The old transmitting L2_ARQ agreement entity (that is, L2-ARQla) and the old receiving L2 ARQ agreement entity (that is, L2-ARQ lb) are composed of an old SDU data buffer 114 and an old PDU data buffer 116. Similarly, the newly transmitted L2-ARQ agreement entity (ie L2-ARQ 2a) and the newly received L2-ARQ agreement entity (ie L2-ARQ 2b) are buffered by a new SDU data buffer 118 and an old PDU data District 120. In this scheme, the old transmitting L2_ARQ agreement entity decides whether the PDU data buffer 116a of the old transmitting L2_ARQ agreement entity needs to be reorganized back to the SDU. If so, the restructured SDU is forwarded to the old L2_ARQ agreement entity SDU data buffer 114a. The old L2_ARQ agreement entity SDU data buffer area 114a will contain the SDU encapsulating the L3 PDU, which is marked with S1 in FIG. 5. These SDU (S1) in the old L2_ARQ agreement entity SDU data buffer 114a are then transferred along the path 115 to the new transmission L2_ARQ agreement entity-20- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ) ------------ (Please read the precautions on the back before filling out this page) tr --------- line ·· Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 496058 A7 B7 Description of the invention (18) SDU buffer 118a. At the same time, any data retained in the old transmission L2_ARQ agreement entity PDU data buffer 116a is marked as P1 in FIG. 5 and transmitted along the path 117 from the old transmission L2_ARQ agreement entity PDU data buffer 116a to the new transmission L2_ARQ agreement entity SDU data Buffer 118a. These PDUs (P1) from the old transmit L2_ARQ agreement entity PDU data buffer 116a are like SDUs in the new transmit L2_ARQ agreement entity. In addition, after the delivery / reconfiguration has occurred, the new L3 PDU is forwarded between L3 and the newly transmitted L2_ARQ protocol entity SDU data buffer 118a along path 119. The data in the newly transmitted L2_ARQ agreement entity SDU data buffer 118a is cut and transmitted to the newly transmitted L2_ARQ agreement entity PDU data buffer 120a. The data in the newly transmitted L2_ARQ protocol entity PDU data buffer 120a will be transmitted via the air interface to the newly received L2_ARQ protocol entity PDU data buffer 120b. The data in the newly received L2_ARQ agreement entity PDU data buffer 120b will be reorganized and transmitted to the newly received L2_ARQ agreement entity SDU data buffer 118b. The data in the newly received L2_ARQ agreement entity SDU data buffer 118b is sent to the receiving L3 agreement entity or to the old receiving L2_ARQ agreement entity PDU data buffer 116b. Any data in the old receiving L2_ARQ agreement entity PDU data buffer 116b will be reorganized and sent to the old receiving L2_ARQ agreement entity SDU data buffer 114b and then to the receiving L3 agreement entity. Therefore, according to the present invention, at the time of delivery or resetting the configuration, the old transmission L2_ARQ agreement entity PDU data buffer 116a is located in the old transmission L2_ARQ agreement entity PDU data buffer 116a along the path 117 to -21-this paper Standards apply to China National Standard (CNS) A4 specifications (210 X 297 mm) 1 '------------------- Order --------- Line · (Please read the precautions on the back before filling this page) 496058 Printed by the Consumer Property Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Invention Description (19) Newly transmitted any information of the L2_ARQ agreement entity SDU data buffer 118a (? 1) From the old transmission, 1 ^ 2_eight feet (5 agreement entities? 01; the data buffer 1163 logically tunnels through the channel 121 to the old receiving L2_ARQ agreement entity PDU data buffer 116b. There are some in the new receiving L2_ARQ agreement entity Implemented mechanisms that allow newly-receiving L2_ARQ agreement entities to distinguish between L2_ARQ SDUs encapsulating tunneled old L2_ARQ PDUs and L2_ARQ SDUs encapsulating new L3 PDUs. Newly-receiving L2_ARQ agreement entities need these mechanisms to correctly transmit reassembled L2_ARQ SDU to correct buffer: S for new L3 PDU DU data buffer 118b and PDU data buffer 116b for tunneled old L2_ARQ PDUs. This can be achieved by tagging PDUs and / or SDUs, or another option combined with other rules for sending messages. If there is a rule for old transmission The data (P1) in the L2_ARQ agreement entity PDU data buffer 116a is first placed in the newly transmitted L2_ARQ agreement entity SDU data buffer 118a. The newly transmitted L2_ARQ agreement entity only needs to notify the number of the L2_ARQ SDU, or the number of the new L2_ARQ PDU. It encapsulates the old tunneled L2_ARQ PDU in order to allow the receiver to distinguish between the L3 PDU and the old tunneled L2_ARQ PDU. The new receiving L2_ARQ agreement entity will implicitly know that each combination has passed the L2_ARQ SDU, so it does not need to be marked as a PDU and / Or SDU, and where to send it. If the concatenation of multiple L2_ARQ SDUs located in the L2_ARQ PDU is supported by the new L2_ARQ protocol entity, and the new L2_ARQ PDU number containing the tunneled old L2_ARQ PDU is notified, An additional rule must be defined. This rule defines that it is impossible to encapsulate the entire new L3 PDU and then the last new -22 containing the tunneled old L2_ARQ PDU.-This paper standard applies Chinese National Standard (CNS) A4 specification (210 X 297 mm 1 '----------- 11 ^ ---- l · --- order --------- line-^-(please first Read the phonetic on the back? Please fill in this page for matters) 496058 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Invention Description (20) L2 ARQ PDU. As marked, there are at least two different solutions. One solution is to allow two separate L2_ARQ PDU types, one corresponding to the new L3 PDU and the other corresponding to the PDU initiated from the old transmitting L2_ARQ agreement entity (see the explanation of Figure 7 below). Another solution is to add a one-bit field to the L2-ARQ PDU. If the L2-ARQ SDU is really a PDU from the old L2-ARQ protocol entity, this block can be set to one. If it is a new L3 PDU, it can be cleared to zero. The old and new transmitting L2_ARQ agreement entities must be able to communicate with each other, just as the old and new receiving L2_ARQ agreement entities must be able to communicate with each other. These communication links need to be able to establish a tunneling state according to the present invention. This communication link is a logical link, which can be divided into several physical links. For example, the L2_ARQ network node entity can establish logical links at different nodes in the radio access network and through several network nodes involved in the radio access network and / or several physical links of the core network. Alternatively, the two contract entities can be located on the same node and even in the same hardware / software (such as on the same processing device, where the logical link can be one or more device components (see Figure 9) )). In order to establish sequential delivery, the old receiving L2_ARQ agreement entity must notify the new receiving L2_ARQ agreement entity that all old L2_ARQ PDUs are correctly received, reassembled into L3 PDUs, and delivered to the receiving L3 agreement entity. Only after the newly receiving L2_ARQ agreement entity is allowed to transmit SDU to higher layers (ie receiving L3 agreement entity).

When in the tunneling state, the old receiving L2_ARQ agreement entity needs to have knowledge about when to send the last L2_ARQ from the old L2_ARQ agreement entity -23- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -------------------- Order --------- line (please read the notes on the back before filling this page) 496058 Intellectual Property Bureau of the Ministry of Economic Affairs Printed by employee consumer cooperative A7 B7 V. Invention description (21) has arrived. The invention allows this information to be passed from the old transmitting L2_ARQ agreement entity to the old receiving L2_ARQ agreement entity. One way to do this is to state by a rule that the tunneled old L2_ARQ PDU is first placed in the newly received L2_ARQ protocol entity SDU data buffer 118b and combined with the PDU holding the tunneled old L2_ARQ PDU Or SDU number delivery mechanism. Then the newly receiving L2__ARQ agreement entity implicitly knows when there are no more tunneled old L2_ARQ PDUs coming in, because it must be able to distinguish between the L2_ARQ SDU encapsulating the new L3 PDU and the L2_ARQ SDU encapsulating the tunneled old L2_ARQ PDU. Another way to do this is to communicate the highest serial number of the last old L2_ARQ PDU of the old transmitting L2_ARQ agreement entity to the old receiving L2_ARQ agreement entity. This serial number can be transferred from the old transmitting L2_ARQ agreement entity to the old receiving L2_ARQ agreement entity via any suitable transmission method. The four solutions that can do this are explained below. The first way to solve this process is to notify the serial number through the control agreement entity. This, of course, means that the old L2_ARQ agreement entity notified the control agreement entity of this serial number. The second method to solve this process is to place the sequence number in a special PDU (indicated by the PDU type field) from the old transmitting L2_ARQ agreement entity to the old receiving L2_ARQ agreement entity. This special PDU may be the first message transmitted before any L2_ARQ PDU is tunneled. This special PDU is also transmitted via the channel. The third method to solve this process is to transmit a special PDU (indicated by the PDU type field), from the old transmission of the L2_ARQ agreement entity to the old reception-24.-This paper standard applies the Chinese National Standard (CNS) A4 specification ( 210 X 297 mm) 1 '-.---------------- Order --------- line · (Please read the precautions on the back before filling in this page ) 496058 A7 B7 printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (22) After the last L2_ARQ PDU was tunneled by the L2_ARQ agreement entity. This special PDU indicates that the previous L2_ARQ PDU was the last tunneled L2_ARQ PDU. This special PDU is also transmitted via the channel. The fourth method to solve this process is to place the sequence number in a special PDU (indicated by the PDU type block) from the newly transmitted L2_ARQ agreement entity to the newly received L2_ARQ agreement entity. This special PDU is the first message transmitted before any L2_ARQ PDU is tunneled. This sequence number needs to be transmitted from the old transmitting L2_ARQ agreement entity to the new transmitting L2_ARQ agreement entity, and from the new receiving L2_ARQ agreement entity to the old receiving L2_ARQ agreement entity. Knowledge about when the tunneled L2_ARQ PDU arrived last is used by the receiver to know when the old receiving L2_ARQ agreement entity can be terminated. Sequential delivery of L3 PDUs must also be facilitated at the receiver. The old receiving L2_ARQ agreement entity must deliver all data to the receiving L3 agreement entity, and indicate that it has ended before the new receiving L2_ARQ agreement entity can start delivering data to the receiving L3 agreement entity. Regarding Fig. 6, it shows a delivery diagram 130 of a delivery context according to the present invention. The special example shown in FIG. 6 is based on UMTS and involves a User Equipment Radio Resource Control Protocol entity (UERRC) 132, and a first User Equipment Radio Link Control Protocol entity 134 (User Equipment Radio Link Control protocol entity (UERLC1), second user equipment radio link control protocol entity I36 (UERLC2), first network radio link control protocol entity 140 (NW RLC1), second network radio link control protocol entity 138 (NW RLC2), the first network radio resource control agreement entity 142 -25- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ------------- ------- Order --------- line (please read the notes on the back before filling this page) 496058 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7__ V. Description of Invention (23 ) (Network Radio Resource Control protocol entity, NW RRC1), second network radio resource control protocol entity 144 (NW RRC2) 〇 During the delivery, the UE PRC entity 132 sends a cell update message 146 (CELL UPDATE) to the NW RRC1 entity 142. In response, the NW RRC1 entity 142 requests the NW RRC2 entity 144 to use the configuration requirement message 148 (RRC_RLC_CONFIG.req) to establish a new RLC agreement entity. The NW RRC2 entity 144 then uses the configuration requirement message 150 (CRLC_CONFIG.req) to set up the NW RLC2 entity 138. After the establishment of the NW RLC2 entity 138, the NW RRC2 entity 144 uses the configuration confirmation message 152 (RRC_RLC_CONFlG.cfm) and the NW RRC1 entity 142 to confirm the generation of the NW RLC2 entity 138. The NW RLC1 entity 140 is then suspended by the NW RRC1 entity 142, and a suspension request message 154 (CRLC_SUSPEND.req) is used, which causes the NW RLC1 entity 140 to stop transmitting data and enter the above-mentioned tunneling state. Secondly, the uncut SDU in the NW RLC1 entity 140 is transmitted to the SDU buffer of the NW RLC2 entity 138 via the SDU transfer message 156 (SDU TRANSFER). The cell update confirmation message 158 (CELL UPDATE CONFIRM) is then transmitted from the NW RRC1 entity 142 to the UE RRC entity 132. The cell update confirmation message 158 (CELL UPDATE CONFIRM) may contain an indication of the last PDU sequence number in the NW RLC1 entity 140. When receiving the cell update confirmation message 158 (CELL UPDATE CONFIRM), the UE RRC entity 132 uses the configuration requirement message 160 (CRLC_CONFIG.req) to establish the UE RLC2 entity 136. In addition, the UE RLC1 entity 134 was interrupted by the UE RRC entity 132 using the suspension request message 162 (CRLC_SUSPEND.req), which caused the UE RLC1 entity 134 to stop transmitting data and enter the aforementioned tunnel-26- Paper size applies Chinese National Standard (CNS) A4 Specifications (210 X 297 mm) -------------------- Order --------- Thread ml (Please read the precautions on the back before filling (This page) 496058 A7 B7 V. Description of the invention (24) Wear mode. Next, the uncut SDUs in the UE RLC1 entity 134 are transmitted to the SDU buffer of the UE RLC2 entity 136 through the SDU forwarding message 164 (SDU TRANSFER). The cell update complete message 166 (CELL UPDATE COMPLETE) is then transmitted from the UE RRC entity 132 to the NW RRC1 entity 142. The cell update complete message 166 (CELL UPDATE COMPLETE) may include an indication of the last PDU sequence number in the UE RLC1 entity 134. At this point, there is no data transfer between the UE RLC1 entity 134 and the NW RLC1 entity 140. That is, the UE RLC2 entity 136 and the NW RLC2 entity 138 now perform a data transfer function. However, any data retained in the UE RLC1 entity 134 can now be transparently transmitted through the UE RLC2 entity 136. Once the UE RLC1 entity 134 receives the tunneling request message 168 (CRLC_TUNNELING.req) from the UE RRC entity 132. Similarly, any data retained in the NW RLC1 entity 140 can now be transparently transmitted through the NW RLC2 entity 138. Once the NW RLC1 entity 140 receives the tunneling demand information 170 (CRLC_TUNNELING.req) from the NW RRC1 entity 142. It is best to start the tunneling with a status report, which indicates which PDUs were received correctly, so these need not be transparent. For example, when the NW RLC1 entity 140 sends a status report message 174 (STATUS) to the UE RLC1 entity 134, the UE RLC1 entity 134 sends a status report message 172 (STATUS) to the NW RLC1 entity 140. The status report message 172 may also include an indication of the last PDU sequence number in the UE RLC1 entity 134. Similarly, the status report message 174 may also include an indication of the last PDU sequence number in the NW RLC1 entity 140. After all the data in the UE RLC1 entity 134 has been properly transparent and transmitted, the UE RLC1 entity 134 uses the configuration instruction message 176-27- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ) (Please read the notes on the back before filling out this page) it ---- Order --------- ^ · Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 496058 A7 B7 V. Invention Description (25 ) (CRLC_CONFIG.ind) indicates the same thing to the UE RRC entity 132. The UE RRC entity 132 then releases the UE RLC1 entity 134 using the configuration requirement message 180 (CRLC_CONFIG.req) ^. Similarly, after all the data in the NW RLC1 entity 140 is properly transparent and transmitted, the NW RLC 1 entity 140 uses the configuration instruction message 178 (CRLC-CONFIG · .ind) to indicate the same thing to the NW RRC1 entity 142 . The NW RRC1 entity 142 then uses the configuration requirements; the request message 182 (CRLC_CONFIG.req) releases the NW RLC1 entity 140. At this point, it should be noted that if sequential delivery is required, the UE; RLC2 entity 136 and NW RLC2 entity 138 should be notified to all UEs RLC1; PDUs and all NW RLC1 PDUs have been received separately. Thereafter, the UE RLC2 entity 136 and the NW RLC2 entity 138 may transmit the UE RLC2 SDU and the NW RLC2 SDU to higher layers, respectively. At this point, it should also be noted that the Suspended Demand Message 154 (CRLC-SUSPENDreq) and the Suspended Demand Message 162 (CRLC_SUSPEND.req) are somewhat misunderstood. Generally, the agreement entity can be interrupted and can be reactivated later. In the special example shown in FIG. 6, however, RLC1 entities 134 and 140 do not re-operate, but only enter tunnel mode. Printed on Figure 7 by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, which shows the format of L2—ARQ Acknowledged Mode Data (AMD) PDU 190, where L2—ARQ can be, for example, the Radio Link Control Protocol ( RLC) entity. AMD PDU 190 includes data / control (D / C) bit 192, indicates that this PDU is an AMD PDU or control PDU, sequence number (SN) block 194, poll (P) bit 196, and packet header Header compression (Η) bit 198, one or more extension (E) bit 200, zero or more length -28- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (%) 496058 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the Invention (26) Instruction field 202, one or more data blocks 204, and one containing padding (PAD) or piggyback ) The optional field 206 of the STATUS PDU. The extension bit 200 and the length indication field 202 may be related to the advantages of the present invention. The extension bit 200a indicates whether the next field is data or a length indication. When concatenation or padding occurs in the PDU, the length indication field is used. In both cases, it indicates where the concatenation or padding starts. If concatenation occurs, the length indication field 202 indicates the boundary between two higher-level blocks. If blanking occurs, the length indication field 202 is assigned a special number. The extended bit 200b is then set to indicate that the next byte will be another length indicator. The length indication field 202 will then indicate the boundary between the data and the space to be filled. One of the length indication fields 202 can also be used to indicate whether the data block 204 contains a tunneled RLC PDU or an L3 PDU. To indicate the transport of tunneled RLC PDUs, the length indicator bit 202 may be assigned a special and reserved number. Regarding Figure 8, the format of the L2_ARQ control PDU 220 is shown here, where L2_ARQ can again be, for example, a Radio Link Control (RLC) protocol entity. The control PDU 220 includes a data / control (D / C) bit 222, indicating that the PDU is an AMD PDU or a control PDU, a PDU type block 224, indicating the type of the control message, a reserved field 226, zero or more A specific control field 228 (Specific Control Field), a type determined by the control message, and a padding (PAD) 230 for filling the remaining part of the control PDU 220. The control PDU 220 may be used to transfer the last untransmitted L2_ARQ PDU sequence number of the old transmitting L2_ARQ agreement entity to the old receiving L2_ARQ agreement entity. -29- This paper size is applicable to China National Standard (CNS) A4 (210 X 297 male) Γ ----------------- r --- order ------- -Line (please read the note on the back? Matters before filling out this page) 496058 A7 ------ B7 ____ V. Description of the invention (27) The control message can be defined as being tunneled through the new L2-ARQ link The PDU of the old L2—ARQ link, or the pdu of the new L2—ARQ link. In this case, the serial number is sent between the new and old L2—ARQ protocol entities. To define this control message, define a PDU type block 224. Specific values and specific control bays 228 contain serial numbers. It should be noted at this point that the transmissions associated with the delivery context described above are typically doubled to the control of a processor that stores or transmits instructions to a memory device. For example, regarding FIG. 9, each of the above-mentioned contract entities may have an associated processing device 210 having at least one processor 212 (Prcessor, P), a memory 214 (M), and an input / output device 216 (I / O) , Are connected to each other through a bus 218 (bus), and are used to implement a delivery mechanism involving the above-mentioned delivery situation. The present invention is not limited to the description here Except for those described herein, the various modifications of the present invention, from the previous description and accompanying drawings, will truly be obvious to those skilled in the art. Therefore, such modifications will be The intention is to fall within the scope of additional patent applications. -------- tr --------- line (please read the precautions on the back before filling out this page) Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Print

496058 Life-saving test 1% ship 丨 9113222 patent application A7 _ 1 Manual revision page (May 91) B7 V. Description of invention (27a) Graphic component symbol description 10 Cellular mobile communication system 12 Core network (CN ) 14 Radio Access Network (RAN) 16 Mobile Station (MS) 18 Control Node 20 Base Station Transceiver Station (BTS) Node 50 General Protocol Stack 100 Cellular Mobile Communication System 102 CN 104 RAN 106 MS 110 SDU Data Buffer 112 PDU data buffer 114 Old SDU data buffer 115 Path 116 Old PDU data buffer 117 Path 118 New SDU data buffer 119 Path 120 New PDU data buffer 121 Channel 130 Transmission diagram 132 User equipment radio resource control Agreement entity (UERRC) -30a-This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) 496058 minus 1 drive 13222 patent application κη certificate amendment page (May 91) B7 Explanation (27b ) 134 First user equipment radio link control protocol entity (UERLC 1) 136 Second user equipment radio link control protocol entity Entity (UERLC 2) 138 second network radio link control protocol entity (NWRLC 2) 140 first network radio link control protocol entity (NWRLC 1) 142 first network radio resource control protocol entity (NWRRC 1) 144 Second Network Radio Resource Control Protocol Entity (NWRRC 2) 146 Cell Update Message (CELL UPDATE) 148 Configuration Request Message (RRC_RLC_CONFIG.req) 150 Configuration Request Message (CRLC_CONFIG.req) 152 Configuration Confirmation Message (RRC_RLC—CONFIG .cfm) 154 Suspension request message (CRLC_SUSPEND.req) 156 SDU transfer message (SDU TRANSFER) 158 Cell update confirmation message (CELL UPDATE CONFIRM) 160 Configuration request message (CRLC-CONHG.req) 162 Suspend request message (CRLC_SUSPEN.req ) 164 SDU transfer message (SDU TRANSFER) 166 Cell update completion message (CELL UPDATE COMPLETE) 168 Tunneling demand message (CRLC_TUNNELING.req) 170 Tunneling demand message (CRLC_TUNNELING.req) 172 Status report message (STATUS) 174 Status report message (STATUS) 176 Configuration instruction message (CRLC_CONFIG.ind) 178 Configuration instruction message (CRLC_CONFIG.ind) 180 Configuration requirement message (C RLC—CONHG.req) ____-30b-This paper size applies to China National Standard (CNS) A4 (210x 297 mm) 496058

$ 9113222 Patent Application 4 Specification Correction Page (May 91) A7 B7 Instructions (27c 182 190 192 194 196 198 200 202 204 206 210 212 214 216 218 220 222 224 226 228 230 Configuration Requirements Information (CRLC-CONFIG .req) L2-ARQ Confirmation Mode Data (AMD) PDU Data / Control (D / C) Bit Sequence Number (SN) Field Query (P) Bit Header Compression (H) Bit Extension (E) Bit Length Instruction field data block can choose field processing device processor (P) memory (M) input / output (I / O) device bus L2-ARQ control PDU data / control (D / C) bit PDU type Field reserve: Special control field fill in blank (PAD) 30c- This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) Binding

Claims (1)

The scope of application for patents is printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs to provide a method for providing a secure link. When the first key link layer agreement entity in the mobile communication system moves to the link layer agreement, the first pair The key layer agreement entity includes a primary transmission link layer protocol entity = cutting data and transmitting data, and _ primary receiving key: the agreement entity is used to receive judgment data from the primary transmission link layer protocol entity and Confirm the received cutting data. The key pair layer protocol protocol contains a secondary transmission link layer protocol entity to cut the data and cut the data with a secondary receiving link layer protocol entity to: Level transmission link layer agreement entity receives the cutting data and confirms the received cutting data 'The method includes the following steps: suspending the data transmission from the π level transmission link layer agreement entity to the primary receiving link 厣 agreement entity; Data transmission from the first-level transmission link layer agreement entity to the second-level receiving link; Secondary transmission link layer protocol entity and the secondary body receiving link layer protocol, from a primary transmission link layer protocol entity through the hidden layer protocol entity receiving the primary. 2. If the method of applying for the patent item No. 丨, "contains the following steps: the remaining level of the transmission link layer", the transmission of uncut data in the "transmission key layer layer" entity is not transmitted, the agreement entity. And transmission link layer 3. If the method of applying for the scope of patent application item i 'further includes the following steps: Cutting untransmitted untransmitted assets in the primary transmission link layer agreement entity 31-This paper standard applies Chinese National Standard (CNS) A4 Specifications (210 X 297 mm) ------------------ ^ ---- Order-I ------ (Please read the note on the back first? Matters (Fill in this page again) ^ όϋ58 Scope of patent application: The printed materials from the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs' · From the primary transmission link layer agreement entity, the cutting agreement is not transmitted in the layer agreement entity: = transmission chain box fixed entity. People, and the transmission link layer agreement 4. If the old method of applying for a patent, it further includes the cutting data combined in the primary transmission link layer agreement entity and the cutting data has been combined in the real face, Level transmission link layer agreement • == method of Lifanyuan item 1, in which the first pair of link layer agreements are controlled by at least one primary control agreement entity and the secondary road layer agreement entities are controlled by at least one secondary control agreement Controlled by the entity, which = the primary transmission link layer agreement entity to the primary reception link layer agreement = the data transmission of the entity is temporarily held by at least one primary control agreement entity, and the secondary transmission link layer agreement entity to the secondary reception The data transmission of the link layer agreement entity is initiated by at least one secondary control agreement entity. 6. The method as claimed in Item 5 of the Patent Model Garden, wherein at least one primary control agreement entity and at least one secondary control agreement entity are the same control agreement entity. 7 · The method according to item 1 of the patent application scope, further comprising the following steps: tunneling the unconfirmed cut data from the primary transmission link layer agreement entity through the secondary transmission link layer agreement entity and the secondary receiving link layer agreement entity Connected to the primary receiving link layer agreement entity, from the primary connection -32- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ----- ^ --- Order ---- ----- ^ (Please read the note on the back? Matters before filling out this page) Scope of patent application: Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. The information is transmitted to the primary transmission link layer 8. The method of item 1 of the patent application park further includes the following steps: ^ Knowing the receiving link layer agreement entity, through the secondary transmission link: Level receiving link layer agreement entity, the end will be uncertain, knife. It is tunneled from the primary transmission link layer agreement entity to the primary reception link layer agreement entity. 9. The method of applying for patent No. 8 wherein the first pair of link layer agreement entities are controlled by at least one primary control agreement entity, and the second pair of link layer agreement entities are controlled by at least one secondary control agreement entity, which further includes The following steps: From at least one primary control protocol entity, transmitting the sequence number of the last unconfirmed data block in the primary transmission link layer protocol entity to at least one secondary control protocol entity 'to notify the primary receiving link layer protocol entity, The primary transmission link layer agreement entity and the secondary receiving link layer agreement entity end tunneling the unconfirmed cut data from the primary transmission link layer agreement entity to the primary receiving link layer agreement entity. 10. The method according to claim 8 in which the first pair of link layer agreement entities are controlled by at least one primary control agreement entity, and the second pair of link layer agreement entities are controlled by at least one secondary control agreement entity, and further It includes the following steps: From at least one primary control agreement entity, transmitting an indication of the number of tunneled unconfirmed cut data to at least one secondary control agreement entity to notify the primary receiving link layer agreement entity via the secondary transmission link -33 Paper size applies to China National Standard (CNS) A4 (210 X 297 mm) ----- r --- Order --------- Line Γ Read the precautions on the back before filling in this page ) 6. The scope of the patent application and the secondary receiving link layer agreement entity will not be determined at the end of the application: ::: cutting the material from the primary transmission link layer agreement entity to the receiving link layer agreement entity. U · If the method in the eighth item of the patent application is applied, it further includes the following steps: Defining and passing through unascertained data to notify the primary receiving link layer protocol t / human-level transmission link layer agreement entity and secondary receiving The chain body ends the unconfirmed cutting data from the primary transmission chain. Two: Two: The body passes through before the primary receiving link layer agreement entity, and the 1: _layer agreement entity 'transmits the final unconfirmed data in the primary transmission link layer body. The sequence number of the block, the link layer agreement entity. T Han's method is as general as the claim, and the method in the scope of patent No. 8 further includes the following steps: The cutting data is not confirmed when taking it, indicating that the first _ subject to be worn is cut by Shi Yu Γ as the last subject is not confirmed. Cutting data, line center II 二 Link layer agreement entity 'through the secondary transmission link layer W entity and the secondary receiving link layer agreement entity, the data is cut from the primary transmission link layer agreement entity to the primary After printing and sending the entity by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Relations, it obtains information from the primary transmission link layer agreement entity to the primary receiving link layer agreement entity. 13. The method according to item 8 of the scope of patent application, further including the following steps: = Passing unconfirmed cutting data to notify the primary receiving level transmission link layer agreement entity and the secondary receiving chain. From the primary transmission link layer W body to the primary reception link layer agreement entity, 1_________ -34- This paper standard is applicable to the Chinese National Standard (CNS) A4 specification (21〇χ 297 mm) — 6. Apply for a patent The range entity, and the round link layer agreement entity sends a message containing the last unconfirmed data block sequence number in the initial layer agreement entity, and the secondary receiving link layer agreement entity. 14. The method according to item 13 of the patent application scope, further comprising the following steps: ... ^ Sending a message < Sending a sequence number from a primary transport link layer protocol entity to a secondary transport link layer protocol entity ; And after transmitting the message, the serial number is sent from the secondary receiving link layer protocol entity r to the primary receiving link layer protocol entity. This 15. For example, please request the method in the scope of the patent, and further include the following steps: 1. From the secondary transmission link layer agreement entity, transmit the tunneled unconfirmed scallop number to the secondary reception key. The road-layer agreement entity uses the primary transmission link layer agreement entity and the secondary reception link layer agreement entity to end the unconfirmed cutting of the primary transmission chain through the secondary transmission link layer agreement entity and the secondary reception link layer agreement entity. The road layer agreement entity tunnels to the primary receiving link layer agreement entity. i6. If the method in the scope of application for patent No. 15 further includes the following steps: Before transmitting the instruction, the primary transmission link layer agreement entity sends the number of the tunneled unconfirmed cut data to the secondary transmission link layer agreement entity. ; And 'After transmitting the instruction, the secondary receiving link layer agreement entity sends the number of the tunneled unclear cut to the primary receiving link layer agreement entity. 17. The method according to item 8 of the scope of patent application, further comprising the following steps: A message is transmitted from the secondary transport link layer protocol entity, which includes tunneling _____________---- order --- ------ line (please read the note on your mouth first and then fill out this page) _ 35- ^ 0058 2. The scope of patent application: The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed the quantity of uncut crustacean materials to indicate to the secondary receiving link layer agreement body to know that the primary receiving link layer is in Luoding. The link-layer agreement entity and the secondary receiving link-layer agreement entity, the society knows that the cutting-sword data has not been confirmed from the primary transmission key layer $ defined entity_brand level receiving the link-layer agreement entity. For the first 18 ', please refer to the method of Patent No. 8 in which the first pair of link layer entities are controlled by at least one primary control agreement entity, and the second real layer protocol entity is controlled by at least one secondary control agreement entity. Include the following steps: J 'from at least one primary control link layer agreement entity, transmit tunneling ... confirm the indication of the cut data number to at least one secondary control layer 2 cooperative entity to notify the primary receiving link layer agreement entity Secondary transmission link layer agreement entity and secondary reception link layer agreement 2 body: End tunneling of unconfirmed cut data from the primary transmission key layer agreement body to the primary reception link layer agreement entity. 19. The method according to the scope of patent application No. 8 further includes the following steps. From the primary transmission link layer agreement entity, send a notification to the secondary transmission layer y agreement entity, and instruct the secondary transmission key layer layer agreement entity to discard the secondary Receiving the link layer agreement entity, ending the tunneling of unconfirmed cuts from the first-level transmission link layer agreement entity to the primary receiving link layer agreement entity; 'From the second transmission link layer agreement entity, transmitting a message to the second receiving key channel Layer agreement entity, instructing to pass through the secondary transmission link layer agreement entity and the secondary receive link layer agreement entity to end the unconfirmed cut_㈣ 木 paper standard applies Chinese National Standard (CNS) A4 regulations ^ I ^ 97 ---- ---- t --------- (Please read the precautions on the -t side before filling out this page) 36-496058 It further includes the following steps: '~ The first pair of link-layer agreements is implemented from the first Link layer agreement system A8 B8 C8 D8 • Patent application scope The transmission link layer agreement is passed through to the primary receiving link layer entity; and the force is received from: the level receives the link layer agreement entity and sends a message to the primary receiving The link sounds from ... Beam through secondary transmission link layer protocol entity wash times: receiving link layer protocol entity, the sword cut unacknowledged data transfer from the primary gear foot link layer protocol entity to the tunnel receiving link layer protocol entity of the primary. J 2〇 If the method of applying for the patent item No. 8 further includes the following steps: After all unconfirmed cut data has been passed through, terminate the first pair of key 协定 agreement entities. The method according to item 21 of the scope of patent application is after a preset period of time. 21 The method according to item 1 of the scope of patent application The transfer of the entity to the sub-link-layer agreement entity is due to the transfer of mobile communications. I. System 23. The method according to item 1 of the scope of patent application, wherein the migration from the first pair of link layer agreements to the second pair of link layer agreement entities is due to the agreement group setting. 24. For the method of applying for the scope of the patent No. 23, the first item of the T-link-layer agreement entity uses the same agreement as the second-pair of the link-layer agreement entity. 25. The method of claiming 24 items in the scope of the patent application, in which the first item is left-clicking on the link layer agreement. The physical configuration setting method is different from the actual implementation of the link layer agreement. 26. The method of claim 23 in the scope of patent application, wherein the first consideration ^ Υ I for the link layer agreement entity uses a different agreement than the second pair of link layer agreement entities. -37- This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) — — — — — — — 11 ----- ^ --- 1 ----- ^ AW. (Please Read the precautions on -t before filling out this page) Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 496058 A8 B8 C8 D8 VI. Application for patent scope 27 · If you apply for a patent, the first one in the park! Item method, in which the unconfirmed cutting data in the first pair of transmission link layer cooperative entities is transmitted through the secondary transmission link layer cooperative entity and the secondary receiving link layer agreement entity from the primary transmission link layer agreement entity. The steps to the primary receiving link layer agreement entity include the following steps: transmitting unconfirmed cut data from the primary transmission link layer agreement entity to the secondary transmission link layer agreement entity; k eighth transmission link layer agreement entity transmitting the unconfirmed cut data To the secondary receiving link layer agreement entity; and transmitting unconfirmed cut data from the secondary receiving link layer agreement entity to the primary receiving link layer agreement entity. 28. If the method of applying for patent No. 27, further includes the following steps: Before transmitting from / into and transmitting the link layer agreement entity to the secondary receiving link layer assisting entity, mark the unconfirmed cut data . 29. The method of item 2S of the Patent Application Park of Ru, in which unidentified cut data is marked using a length indication stop in the data unit of the confirmed pattern data agreement. 30. The method according to item 28 of the patent application park, wherein a special stop in the control agreement data sheet 7C is used to mark the unconfirmed cut data. 31. The method according to item 27 of the patent application park, wherein the unconfirmed cut data is transmitted to the secondary receiving link layer agreement entity through a dedicated communication link / human-level transmission link layer agreement entity. 32. For the method of claim 27 of the Patent Fanyuan, in which unconfirmed cutting data is transmitted from the secondary transmission link layer agreement entity to the secondary receiving link layer agreement, please read the note of © before filling out this page II Order printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 38 496058 I. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs __g__ The entity defining the scope of the patent application, before any higher-level materials do so, to ensure the integrity. · ‘Jin 33. Such as the scope of patent application! This method further includes the following steps: combining the tunneled unconfirmed cutting data with the confirmed cutting data of the primary link layer agreement entity; and ㈤ combining the combined cutting data. 34. The method according to item 33 of the patent application, further comprising the following steps: Directly transmitting the combined data to the higher-level agreement entity. 35. The method according to item 33 of the patent application scope, further comprising the following steps: transmitting the combined binding data to the higher layer agreement entity through the secondary receiving link layer agreement entity. Mouth 36. The method of claim 33 in the patent application scope further includes the following steps: before the secondary receiving link layer protocol entity sends any data to the higher layer protocol entity, transmitting the combined data to the higher layer protocol ^ fa, This is done to ensure complete sequence consistency. 37. If the method claimed in item 36 of the patent scope further includes the following steps: Notify the secondary receiving link layer agreement entity that all combinations have been combined and have been transmitted to the higher layer agreement entity, so as to ensure the order and consistency . 38. The method according to item [Scope of Patent Application], wherein the first pair of link layer agreement entities and the second pair of link layer agreement entities are self-gravity repeated request agreement entities. 39 · —A device used in a mobile communication system to provide a secure link when a link layer protocol entity transfer occurs between a pair of entities. This device includes: a first pair of link layer protocol entities and a first pair of link layers Agreement entity package ------------------ r --- order --------- line Hjjll " (Please read the note on the back first? Matters then (Fill in this page) -39- VI. Patent application scope: Primary transmission link layer agreement actual cutting fund section, and a primary receiving chain ::: Cut the data and discuss the transmission link layer agreement entity receiving; From the initial rhyme data; and d㈢ and confirm the received cut-to-link-layer agreement entity, the sub-link secondary transmission link-layer agreement entity: Real-a data, and a secondary receiving link-layer agreement The round is cut and created by the transport link layer agreement entity and receives the cutting data from the secondary transmission; α Niu Cui Cui received the cutting data :: The first pair of link layer agreement entities are set to be transferred to the subordinate entity. The link layer protocol is connected by the link layer primary transmission link layer protocol entity: link :: medium: slave data transmission; to receive the link layer cooperative entity The sub-link layer protocol entity is set to transfer the contract entity to the sub-pair link field by the first pair of link layer transmission link sound associations; ^ f Α㈢, starting from the secondary material transmission 2, the body to The resources of the secondary receiving key layer agreement entity, in which the first pair of link layer agreement entities and the second pair of links are transferred from the first pair of link layer agreement entities to the second pair of keys, are set to pass through the secondary transmission link The core receives the link layer agreement entity from the primary transmission link "::; The primary primary transmission link is forest-& & The entity will search for the unreliable primary reception in the link layer cooperative entity. Link-layer agreement entity. "Section Tunnel to 40 · Manufacturings" for mobile communication. Two link-layer agreements are suitable for this paper. _ -40-297 mm) 496058 When applying for the patent scope, the Intellectual Property Bureau of the Ministry of Economic Affairs, the employee's consumer cooperative, and the printing and printing entity of the entity pair are transferred. The fixed entity contains one primary = full link. The first pair of link layers coordinates and transmits the cut data. The layer agreement entity is used to cut the data from the primary transmission link; ::: ,, and receive the link layer agreement to identify the received cutting data, and the sub-entity receives the cutting data and confirms it. ^ For the link layer agreement entity Contains a secondary, and round! I link layer protocol entities use M, ^ ^ Rainbow to cut data and transmit the cut data 'and a secondary receiving clock ,,,,, and so on. ㈢The protocol entity is used to transmit from the secondary. The link-layer agreement entity receives the cut-to-thick time ", & the person, and the complete system, and confirms the received cutting materials, and the manufactured product contains ... W ^ at least one processor-readable earner) ; And oxygen, (Processor readable 1 to: >-instructions carried on a fixture; where these instructions. ^ ^ Fixtures are set to a readable form, and therefore cause at least one processor to operate, so So, temporarily interrupted from the beginning Data transmission from the link level protocol entity to the primary receiving entity; @ Μ to transfer the primary transmission link from the primary transmission link layer protocol entity through the secondary transmission link layer protocol entity and the secondary receiving link entity, and The unconfirmed cutting data in the layer protocol tunnels to the primary receiving link layer. I — (Please read the precautions on the -f side before filling out this page) Order --------- Line 1- 41