Method and device for transmitting and receiving data in wireless communication system
A communication system and user equipment technology, applied in the field of sending and receiving data and equipment in a wireless communication system, can solve problems such as random access failure, and achieve the effect of improving efficiency and effective management
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no. 1 example
[0081]According to the first embodiment, when one or more BIs corresponding to various conditions or events are provided, an additional field may be defined in the BI subheader of the MAC PDU in order to indicate multiple BIs.
[0082] Figure 5A A first format according to an embodiment of the present disclosure is shown.
[0083] specifically, Figure 5A A first format 501 and a second format 502 including the BI field proposed in the first embodiment are shown.
[0084] Figure 5A A first format including a BI field according to an embodiment of the present disclosure is shown. Here, the one-bit E field 501-1 and the one-bit T field 501-2 may perform the same functions as those having equivalent terms in LTE. For example, the E field may indicate whether there is a next subheader, and the T field may indicate whether the subheader is a BI subheader or a subheader corresponding to MAC RAR.
[0085] The first format 501 may include a field 501-3 including various conditi...
no. 2 example
[0105] Figure 7 is a signaling flow chart between a UE and a base station according to an embodiment of the present disclosure.
[0106] According to the second embodiment of the present disclosure, a plurality of BI subheaders may be included in the header of the RAR PDU. Also, in the second embodiment of the present disclosure, which condition or event each BI subheader corresponds to can be provided via system information.
[0107] For example, the BI subheader may include at least an E field and a BI field applied to LTE. The BI subheader can reuse LTE's single-byte format without any changes. In addition, the BI subheader can use two reserved bits in the existing format to indicate specific information.
[0108] The second embodiment of the present disclosure can minimize changes to the format of the BI subheader, but can include condition or event information in system information. Therefore, RRC signaling can be increased.
[0109] Here, the system information inc...
no. 3 example
[0125] According to one embodiment of the present disclosure, the base station may only provide a single BI subheader as in LTE technology. Random access related to conditions or events provided by the base station via system information may ignore the BI subheader.
[0126] In this case, the conditions or events may include SRB1 transmission, SI (system information, system information) request, handover and connection reestablishment. Here, ignoring the BI subheader may mean that the BI value included in the subheader may not be applicable.
[0127] For example, in random access independent of conditions or events, when random access fails, preamble transmission can be retried after waiting for a backoff time by applying the BI value of the BI subheader. Here, conditions or events may be predefined or provided via system information. Whether to ignore BI values according to certain conditions or events can be controlled by at least one indicator.
[0128] Embodiments of ...
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