TW591920B - Scheme to discard an erroneous PDU received in a wireless communication system - Google Patents

Abstract

The present invention provides a method for specifying actions that a receiver takes upon receiving an AM or UM PDU with an error indication. Currently, for RLC acknowledged mode (AM) and unacknowledged mode (UM), upon receiving an AM or UM PDU with an error indication, actions that the receiver takes are not specified. Inappropriate actions that the receiver takes can cause serious problems. For example, unnecessary reset procedures are initiated, unnecessary retransmissions are made, data is lost, or synchronization between the sender and receiver can be lost. In an embodiment of the present invention, for RLC AM, upon receiving an AM PDU with an error indication, the receiver discards this PDU. In another embodiment of the present invention, for RLC UM, upon receiving a UM PDU with an error indication, the receiver discards this PDU. In another embodiment, MAC discards a MAC SDU that is to be delivered to an AM or a UM RLC entity, if an error indication for this SDU has been received from the lower layer. As a result, radio resources are not wasted, unnecessary retransmissions are avoided, synchronization is maintained, and data loss is prevented. Therefore, by utilizing the present invention, wireless communication system performance is improved.

Description

V. Description of the invention (l) [The number of agreements of the present invention where the invention receives UM] [prior art] In view of the lack of performance required by wireless services, however, due to the limitation of limited resources, The larger the frequency of the system is, the more the frequency range is used. More common in its due to the number of errors. Technical field] About a wireless communication protocol. In particular, a method for performing appropriate actions when receiving a response mode (AM) or non-response mode data unit (PDU) equipped with an error indication. Online communication has gradually become a common communication method and its relative demand has also continued to grow. It has attached importance to and demanded the improvement of wireless communication system-related industries. The previous communication system used fixed channels or frequencies in accordance with its relevant regulations or its actual technology. Therefore, in order to increase the capacity of the wireless communication system at 4 and make the allocation of wide or more efficient use of the communication system, or limited by practical and physical constraints within f, more and more improvements have been made The method of improving the efficiency of the wireless communication system or the method of improving the efficiency of the wireless communication system usually refers to the reduction of unnecessary or unnecessary repeated transmissions resulting in the waste of system resources. The present invention discloses a method for efficiently processing the system. Errors that improve the capabilities of wireless communication systems. [Summary of the Invention] The main purpose of the present invention is to disclose a protocol data unit (Acknowledged Mode (AM) or Unacknowledged Mode (UM))

591920 V. Description of Invention (2)

Protocol Data Unit (PDU), appropriate actions can be made, thus improving the performance of wireless communication systems to effectively address the shortcomings of the conventional techniques. When a radio wave connection is shown by its low-order, it will also be viewed by the line radio wave. The incorrect service data of the protocol data that is indicated incorrectly is set as the control device. If "the wrong radio wave module is provided for a pair of transmissions", the service data sheet of the service is returned to the media access control device of the learning or non-response device. The service data unit is transmitted to the slave% control device. If the error indication for a service data unit has been received by the module, the error relative to this service data unit is transmitted to its radio wave connection control device. In addition, from & "Transparent Mode (TM) of the control device" received an entrainment error, "Transparent Mode" (TMD) from the media access control device, = Hour 'The receiving device operates according to the following procedure; if "wrong, single delivery (Delivery 〇f Err〇ne〇us SDUs)" $ ", only the service data unit of the radio wave connection that has been received without error will be It is transmitted to its higher-level module. In addition, "transmission of service body unit" is set to "yes", then all service data units connected to the control device are transmitted to its higher order = (or) for each service data unit that received the error ::: False indication. Otherwise, # "M of the error service data unit: Do not check", all the radio wave connection control devices Yuan :: = will be ΐ 其 其 to its high-order module. The setting of this "wrong knowledge technique" is usually assigned by its advanced module. Modal: Say * receive response mode with error indication. In response mode or non-response mode, the receiver cannot:

Page 5 591920 V. Description of the invention (3) Similar to the above-mentioned radio wave connection control, the conventional receiver often causes quite serious problems, such as repeated transmission, data loss or synchronization. For serious problems, such as necessary repeated transmissions are often connected. For this reason, let the receiver operate properly and improve wireless communication. In view of this, the present invention provides a method for displaying a response mode or a non-response mode. In this way, in addition to maintaining the synchronization of the transmission, the system effect in the present invention is improved, so that the above purpose of the present invention is described below with a preferred embodiment: [Embodiment] To explain the present invention in detail, Instructions. [Fortunately, the best embodiment] The device ’s transparent mode was taken because of its improper action. “Unnecessary reset procedures are missing. The transmitter and receiver are missing data, and the miss is taken inappropriately and efficiently by the receiver. Improved processing system performance: When the receiver receives the clip-on protocol data unit, the radio wave resources are not made incapable and the leakage of data is prevented. The features, characteristics, and advantages can be used in conjunction with the drawings. Not only is it possible to lead, unnecessary transmission steps or non-action caused by the action to avoid wrongdoing, but also to respond to it with errors, it can make appropriate waste, and it is explained in more detail with 'more obvious and understandable' The present invention is illustrated in the following preferred embodiments with reference to the first figure, which is a schematic diagram of a radio wave connection control device.

Page 6 πΐ920

Arrange illustrations. When a medium-line radio wave connection is continuously sent from its low-order mode to the transparent device of its manufacturing device, the error is received by the setting data unit according to "If only the received unit is wrong, it will be transmitted." "Wrong, when all wireless to its high-order mode is usually delegated to the high-level access control and installation of the control device, when the group receives it, the radio wave connection mode, the error indication received is not included in the following misservice information sheet of the present invention. If the error is not sent to its higher-order mode, it is "Yes", and then it is transmitted to its service data sheet error service data sheet radio wave connection control group. The "service information specified by the wrong module" if this service information is on the service information sheet control device. The agreement received by the media storage mode, the program action; the transmission of the yuan "is placed on the wire radio connection control unit. If "wrong on all radio wave high-level modules, the yuan provides a transmission to the yuan" by the device's service information. The service information unit is passed to a unitless error indication. The yuan's error indication is then connected to the radio wave connection. When the control and control device has transmitted the data unit, the receiving device is set to the control device service data connection control and / or the corresponding error is set to the transmission unit of the material unit. " Error indication. No "Not checked" will be transmitted "setting This radio wave connection control device usually maintains at least the following state variables at the time of transmission; VT (S) is a transmission state variable, including the next response transmitted for the first time The ordinal number (sequence, number, SN) of the contract's data unit of the pattern. VT (A) is a response state variable containing the last ordinal number of the protocol data unit of the last in-sequence acknowledged response mode agreement.

591920

In addition, this radio wave connection device maintains at least state variables. VR (US) is a receiving state variable, including the next ordinal number of the ordinal number of the contracted data unit in the last non-response mode. In the conventional art, for the radio wave connection control type [when the receiver receives the agreement data unit of the loss band, false response mode or non-response mode, the connection is made: similar to the above-mentioned radio wave connection control device The transparent mode 1 moves g ^ and the improper actions taken by the receiver are as follows—the above-mentioned problems are more likely to cause serious problems. In order to clearly illustrate the advancement of the present invention, the following examples are examples of problems that may occur using conventional techniques. First 'consider when the radio wave connection control receiver receives a protocol data unit with a response mode with an error indication from the media access controller'. The protocol data unit of this response mode is a status protocol data unit (STATUS PDU) 'contains an acknowledgement super-field (ACK SUFI), and this field contains an incorrect last sequence number (LSN) of 100 (the correct LSN is 90) 〇If this Finally, the ordinal number falls outside the [VT (A), VT (S)] interval, and unnecessary resetting procedures will be started, resulting in a waste of radio wave resources. If this last ordinal number falls within the [VT (A), VT (S)] interval. Protocol data units with an ordinal number between 90 and 99 are lost forever. Due to this error, the last ordinal number confirms the receipt of the protocol data units of all response modes with ordinal numbers less than 100, and the transmitter considers all the protocol data with ordinal numbers less than 100.

591920 V. Description of the invention (6) The unit is correctly received by the receiver and moves its transmission window accordingly. Then, because the receiver actually reaches the agreement data unit with an ordinal number of 90 to 99, the receiver transmits a status agreement data unit, thereby requesting the transmitter to retransmit the agreement data unit with an ordinal number from ㈣ to ". Because the required The ordinal number is outside the transmission window, and the necessary resetting procedure is started, resulting in wasted radio wave data. Second, consider that when the radio wave connection control receiver receives a signal from the control device with an error indicator * —The agreement number of the response mode is early. The agreement data unit of this response mode is a status agreement data unit, which contains an error bitmap (811 ^^?) Which is a bitmap superblock of 10011100. BITMAP SUFI). The correct bitmap is 1011.11. This error only occurs in the bitmap stop. If the first ordinal number (nuffiber; FSN) is 0, according to the bitmap of this error ?, ordinal number Agreement data units of}, 2, 5, 6, and 7 will be retransmitted. However, agreement data units of ordinal numbers 2, 6, and 7 were originally received correctly. Therefore, due to repeated transmission The radio wave resources are wasted. The first consideration is when the radio wave connection control receiver receives a non-response mode data (UMD) protocol transmitted from the media access control device with an error indication. Data unit. This error only occurs in the ordinal block of the header of the data protocol data unit that is received in a non-response mode. VR (US) is 100 and the wrong ordinal is 11. The correct ordinal is 1 (Π Receiver Based on this wrong ordinal, VR (US) is updated to 111. When the receiving family receives the next contract data unit with an ordinal number of 02, it receives ι ^ π Page 9 591920 V. Description of the invention (7) The device considers this ordinal number In the next ordinal period, the Hyper Frame Number (HFN) is increased by 1. In fact, the ordinal number is located in the correct ordinal period. Therefore, the HFN between the transmitter and the receiver will be out of synchronization and cause The received protocol data unit with an ordinal number greater than or equal to 102 cannot be deciphered correctly. From the point of view of the known technology, there is no technology to solve the non-response of the HFN to the radio wave connection control device. Asynchronous problems. ^ Regarding the above-mentioned serious problems, such as data loss, synchronization loss, or unnecessary repeated transmission, all occur when the receiver takes improper actions. Effectively collecting the effectiveness of the system The step of returning the appropriate action indicated by the above error and prevent the processing kinetic energy taken by the present invention in terms of the data sheet of this agreement. The mode or method of this response. Therefore, in the omission of information, The response to the exposure of the radio wave connection is to avoid the failure of the system, and the wireless connection is lost. Therefore, receiving the wireless control to prevent improper actions and improving the wireless communication is possible. When the receiver receives the protocol data unit with the wrong mode, Radio wave resources will not be wasted, maintaining the same, and improving the efficiency of the system. The response mode receiving device of the radio wave connection control device with a response mode with an error indication removes this agreement data unit. In the present invention, when the data unit is negotiated, the non-response mode of the device of the non-response mode of the radio indication is removed. Agreement Data Sheet

"When received with an error indication" For radio wave connection control, the wave connection control receiving device is 5. Description of invention (8). In the present invention, the error is deducted. 4—A service data sheet of a media access control device is passed to one: a low-level module receives the service data unit and the media access #: 拉 ΐ or The wireless connection in non-response mode controls Pei Zhi, and is connected; 2 system clothes are removed from this service data unit. From the media, "take the == wire radio connection control receiving device received the agreement data ΐΐ” "to lose the data unit with an error indication-response mode, including: the agreement data unit of the mode is a status agreement stop ( Seems like :: The last sequence number (LSN) of the error is 100 (Response super_6UFI). The correct LSN is 90. = In the conventional art, if the last ordinal number falls in [VT (A), = an unnecessary reset procedure will be started, so there is no f = outside, in the conventional art, if the last ordinal number falls in [VT (A), ντ & the ordinal number of the product) will be forever the agreement data unit between 90 and 99; * because the final ordinal of this error confirms that the agreement data unit of all response modes whose ordinal number is less than 100 When receiving, the transmitter considers that all the protocol data units whose order number is less than 100 are correctly received by the receiver, and accordingly moves the transmission window of the dagger. Then, since the receiver has not actually received the protocol data unit with the sequence number 90 ^ 99, the receiver will transmit a status protocol data unit 'requesting the transmitter to retransmit the protocol data unit with the sequence number 90 to 99. Because the required ordinal occurs outside the transmission window, unnecessary resetting procedures are still initiated, resulting in unnecessary waste of radio wave resources.

Page 11 591920

V. Description of the invention (9) However, when the agreement data unit of the response mode of the present invention is used, the agreement data unit is removed. It avoids and saves radio wave resources and increases the radio frequency connection control receiving device when receiving a radio frequency connection error indication. This unnecessary reset procedure can avoid performance. Continuing to refer to the second example described above, when the radio wave connection control receiver receives the protocol data unit from the media access control device with a response mode with an error indication. The agreement data unit of this response mode is a case. The agreement data unit 'contains a bit map SUFI with a bit map (B 丨 TMAp) of 1 00 1 1 000 with errors. The correct BITMAP is 1 0111 011. This error only occurs in the bitmap range. If the first ordinal number (FSN) is 0, according to the bitmap of this error? , The protocol data units whose ordinal numbers are i, 2, 5 6 and 7 will be retransmitted. However, the agreement data units of agreement data units 2, 6, and 7 were originally transmitted correctly. Therefore, due to this repeated transmission relationship, radio wave resources are wasted. However, by using the present invention, when a protocol is received without a response mode with an error indication, the receiving device removes this protocol data due to repeated transmission of & 'unnecessary protocol data units to avoid mergers. Save its radio wave resources and improve its efficiency. ^ With reference to the second example above, when the radio wave connection control receiver receives a non-response module with an error indication from the media access control device, it is an agreed data unit. This error only occurs in the ordinal field of the header of the received non- ^ response data protocol data unit. VR (US) is 100 and the error ordinal is 110. The correct ordinal number is 101. The receiver updates VR (US) to 111 based on its error sequence number. When the receiver receives the next agreement with an ordinal number of 102

Page 12 591920 V. Description of the invention (10) The data unit. The receiver considers that the ordinal number is in the next ordinal period and increases the frame number by 1. In fact, this ordinal is in the correct ordinal period. Therefore, the UFN between the transmitter and the receiver will be out of sync, so that the protocol data units whose reception order is greater than or equal to 102 cannot be decrypted correctly. As far as the conventional technology is concerned, there is no technology that can solve the non-synchronization of the non-response mode of the HFN connected to the control device of the radio wave. However, by using the present invention, when a non-f wedge-type agreement data unit with an error indication is received, the receiving device removes the agreement data unit. Furthermore, in the present invention, if the service data unit of a media access control device is received from a low-level module and its error indication is carried, if the service data unit is passed to a response mode or a non-response mode If it is connected to the control device, the media access control device removes this service information unit and avoids the loss of synchronization. Source and increased efficiency. Unnecessary agreement data units are transmitted repeatedly and avoided. Therefore, using the present invention saves the effective wireless communication system of the radio wave receiving device ... As mentioned above, the present invention provides an improved method for taking processing action to avoid inappropriate Action and systemic performance. This book provides a way for you: the team said that the data unit of the response mode or the non-response mode of the right-hand side of the agreement is b ^ :. Therefore, radio wave resources will not be wasted and the leakage of shell materials will be maintained. Therefore, the performance of the system is enhanced. And prevent

591920

The above-mentioned invention only discloses an embodiment in which the receiving device efficiently adopts a processing route. In other examples, it includes the use of other different steps or methods. ^ Handle the wrong data unit of the packaged data merge agreement and do not bias it. ^ In the invention, the receiver takes appropriate actions to avoid inappropriate actions and selects the performance of the line communication system. field. ",,

In summary, although the present invention has been disclosed in several preferred embodiments as described above, it is not intended to limit the present invention. Anyone skilled in this art can make a variety of things within the spirit and scope of the invention. Changes and retouching; g. The scope of protection of the present invention shall be defined by the scope of the attached patent application as follows:

Page 14 591920 Brief description of the diagram The first diagram is an explanatory diagram of the arrangement of the radio wave connection control device. Page 15 II!

Claims (1)

^^ 1920 6. Patent application scope 2 4 7 One of the wireless communication system received the agreement data unit by a receiving device. The receiving device removed the error indication such as the patent application scope, the error indication, and the cooperation device. A protocol data sheet is received by a receiving device in a wireless communication system, the receiver removes the error indication in the scope of the patent application, and the non-media access control device is installed in a wireless communication system. The service data and the media access control device are as described in the patent application scope. The service data unit is a control device. For example, the service data unit is bound to the control device in the scope of patent application. The method of error handling in the system includes a protocol data unit of a response mode, which is accompanied by an error indication; and a protocol data unit. The method of error handling described in Wang Xiang, wherein the 疋 data unit comes from the error place in a media access control system, a non-response module is accompanied by a response data location described in item 3 of the error data unit. The method of error handling in the system received a method to remove the service described in 5 items of the server and transferred to a method, including: a protocol data unit of the formula, which indicates an error; and a method of error processing, which includes the agreement data The unit is derived from the rational method, including: error indication, this error indication; and service data unit. Method of error handling, including the radio link in response mode The method of error handling described in item 5, wherein is transmitted to a non-response mode radio link Page 16 591920 6. Scope of Patent Application 8 • The error handling method described in item 5 of the scope of patent application, wherein the error indication is received from a low-level module. 9. An error handling method in a wireless communication system, comprising: a receiving device receives a contract data unit, wherein the contract data unit is accompanied by an error indication; and the receiving device removes the contract data unit. I 0 The method for error handling as described in item 9 of the scope of patent application, wherein the agreement data unit is a agreement data unit of a response mode. II. The error handling method as described in item 9 of the patent application scope, wherein the agreement data unit is a non-response mode agreement data unit. Page 17