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2003-02-25_JP2003507957A_发明专利_JP2003507957A Synchronization method of the base station in a mobile communication system_+++A_b_c_d_p+++.docx
2026-03-19 22:51
2007-09-27_US2007226351A_发明申请_US20070226351A1 System and method for transmitting high throughput data between multiple devices_+++a_b_c_d_m_p+++.docx
2026-03-19 22:51
2010-05-06_JP2010101754A_发明专利_JP2010101754A Mobile terminal, positioning method_+++D_N_P_a_b_c+++.docx
2026-03-19 22:51
2014-02-13_US2014045522A_发明申请_US20140045522A1 UNSYNCHRONIZED TIME-OF-FLIGHT-BASED WIRELESS POSITIONING SYSTEM USING NETWORK BROADCASTS_+++C_D_N_P_m+++.docx
2026-03-19 22:51
2014-10-02_US2014295877A_发明申请_US20140295877A1 Scalable Multi-Channel Ranging_+++D_a_c_p+++.docx
2026-03-19 22:51
2014-11-13_US2014334401A_发明申请_US20140334401A1 ACCESS POINT-ASSISTED POSITIONING FRAMEWORK_+++C_a+++.docx
2026-03-19 22:51
2015-03-05_US2015063228A_发明申请_US20150063228A1 PASSIVE POSITIONING UTILIZING BEACON NEIGHBOR REPORTS_+++C_I_M_a_b_f_g_n+++.docx
2026-03-19 22:51
2017-06-29_US2017188191A_发明申请_US20170188191A1 BROADCAST TIME-OF-DEPARTURE (TOD) FRAME FORMAT_+++A_B_D_E_F_G_H_I_J_K_L_M_N_O_P_c+++.docx
2026-03-19 22:51
2018-01-09_US9867004B_发明授权_US09867004B2 Broadcast time-of-departure (TOD) frame format_+++A_B_D_F_G_H_I_J_K_L_M_N_O_P_c_e+++.docx
2026-03-19 22:51
2019-03-07_JP2019506598A_发明专利_JP2019506598A ブロードキャスト出発時間(TOD)フレームフォーマット_+++A_B_D_E_G_H_I_J_K_L_M_N_O_P_c_f+++.docx
2026-03-19 22:51
2018-01-09_US9867004B_发明授权_US09867004B2 Broadcast time-of-departure (TOD) frame format_+++A_B_D_F_G_H_I_J_K_L_M_N_O_P_c_e+++.docx

对比文件名称:2018-01-09_US9867004B_发明授权_US09867004B2 Broadcast time-of-departure (TOD) frame format

目标专利名称:242广播出发时间(TOD)帧格式CN108450024B

本次调用的模型名称:DeepSeek-R1

## 特征比对表格

技术特征描述以及公开性判断结果对比文件原文引用公开性论述
**技术特征A**:所述方法包括:使所述第一AP的时钟与一或多个同步AP的时钟同步 <br> 《直接公开》[0044] “Techniques disclosed herein provide Broadcast TOD frames from one or more synchronized APs or STAs to one or more STAs for range and/or position determination.” <br> [0066] “Wireless communication system 300 includes one or more STAs 310, and one or more APs AP1 320, AP2 330, and AP3 340 **in a network of synchronized APs**.”对比文件明确公开了用于广播TOD帧的AP网络是“同步的AP”网络(network of synchronized APs)。这意味着网络中的AP(包括第一AP)的时钟是彼此同步的。本领域技术人员可以毫无疑义地得出,要实现这样的同步网络,第一AP的时钟必须与一个或多个同步AP的时钟同步。因此,该技术特征被直接公开。
**技术特征B**:由所述第一AP执行与所述一或多个STA的同步化会话 <br> 《直接公开》[0066] “For STA 310 to determine its absolute position, STA 310 may first **perform an FTM session**, such as FTM session 200 described above with respect to FIG. 2, **with one of the synchronized neighbor APs** capable of broadcasting TOD frames, for example, AP1 320. **Through the FTM session, STA 310 may synchronize with AP1 320**...” <br> [0118] “At block 902, an STA... may first **perform a synchronization session with a first AP** in a network of synchronized APs... The **synchronization session may be an FTM session**...”对比文件多次描述了STA(一个或多个)需要与网络中的一个AP(例如AP1)执行同步化会话(例如FTM会话),以使STA的定时器与该AP(即第一AP)同步。该同步化会话是STA后续利用广播TOD帧进行测距的前提。因此,该技术特征被直接公开。
**技术特征C**:以及由所述第一AP在未从所述一或多个STA接收到请求的情况下将一或多个广播出发时间TOD帧广播到所述一或多个STA <br> 《隐含公开》[0044] “Techniques disclosed herein **provide Broadcast TOD frames from one or more synchronized APs** or STAs **to one or more STAs** for range and/or position determination.” <br> [0067] “STA 310 may then **listen to Broadcast TOD frames from neighboring APs**, such as AP1 320, AP2 330, and AP3 340...” <br> [0077] “Broadcast TOD frames may take different formats, and may include different information that can enable **a receiving STA** to perform range measurement.”对比文件通篇描述了AP向STA“提供(provide)”、“发射(transmit)”或“广播(broadcast)”TOD帧,且STA处于“监听(listen to)”或“接收(receive)”模式。广播(Broadcast)的本质就是一点对多点的单向传输,无需接收方事先请求。虽然原文未明确出现“未从所述一或多个STA接收到请求的情况下”这一短语,但本领域技术人员根据对“广播”通信方式以及说明书上下文(如背景技术中提及单播FTM需要请求和响应)的常规理解,能够毫无疑义地推断出AP广播TOD帧的行为是主动的、周期性的或事件触发的,而非响应于特定STA的请求。因此,该技术特征被隐含公开。
**技术特征D**:所述一或多个广播TOD帧中的每一个包含来自所述第一AP的广播TOD帧的出发时间 <br> 《直接公开》[0044] “The Broadcast TOD frames may include ... **the time of departure of the Broadcast TOD frames from the broadcasting APs**...” <br> [0078] “Broadcast TOD frame 400 includes **a TOD TSF Timestamp field**...” <br> [0079] “The TOD TSF Timestamp field represents the value of the TSF timer of the frame's source—the broadcasting AP.”对比文件明确公开了广播TOD帧包含“出发时间(time of departure)”,具体通过“TOD TSF Timestamp”字段实现,该字段代表了来自广播AP的帧的出发时间。因此,该技术特征被直接公开。
**技术特征E**:其中所述一或多个广播TOD帧中的后续广播TOD帧包含来自所述第一AP的最后一个或所述后续广播TOD帧的出发时间 <br> 《隐含公开》[0069]-[0070] (对应图3B描述) “In the next Broadcast TOD frame 354, the **TOD field may be set to the TOD T1(1) of previous Broadcast TOD frame 352**.” <br> [0073]-[0074] (对应图3C描述) “In the next Broadcast TOD frame 374, the **TOD field may be set to the TOD T1(2) of current Broadcast TOD frame 374**.” <br> [0081] “The TOD of Previous Beacon field includes a timestamp that represents the time... at which the start of the preamble of the **last transmitted Broadcast TOD frame** appeared...”对比文件详细描述了广播TOD帧中TOD字段的两种设置方式(见图3B和3C):一种是设置为**前一个(最后一个)**广播TOD帧的出发时间,另一种是设置为**当前(后续)**广播TOD帧自身的出发时间。这完全覆盖了权利要求中“包含来自所述第一AP的最后一个或所述后续广播TOD帧的出发时间”的两种情形。虽然权利要求将两种情形合并表述在一个特征中,但对比文件已公开了这两种具体的实施方式,本领域技术人员可以合理推断出所要求保护的方案。因此,该技术特征被隐含公开。
**技术特征F**:其中执行与所述一或多个STA的所述同步化会话包括:由所述第一AP执行与所述一或多个STA中的一个的精细定时测量FTM会话 <br> 《直接公开》[0118] “At block 902, an STA... may first perform a synchronization session with a first AP in a network of synchronized APs... **The synchronization session may be an FTM session**, such as FTM session 200 described above with respect to FIG. 2...”对比文件在描述同步化会话的具体实施方式时,明确将其示例为“FTM会话”。因此,“同步化会话包括FTM会话”这一技术特征被直接公开。
**技术特征G**:其中所述一或多个广播TOD帧中的至少一个包含关于所述第一AP的定时器的准确性的信息 <br> 《直接公开》[0083] “The **ppm Estimate field** indicates the estimated accuracy of the TSF timer (or TOD) value for the current Broadcast TOD frame in parts-per-million (ppm). **This field may be optional**.” <br> [0085] “The **Neighbor Report field** may include a plurality of Neighbor Report elements... The Optional Subelements field may include a ... **ppm offset value between TSF timers of two neighbor APs**.”对比文件公开了广播TOD帧中可包含“ppm估计值(ppm Estimate)”字段,该字段直接提供了广播AP自身定时器精度的估计信息。同时,邻站报告字段中的ppm偏移信息也间接反映了AP间定时器的相对准确性。因此,“包含关于定时器准确性的信息”这一特征被直接公开。
**技术特征H**:其中关于所述第一AP的所述定时器的所述准确性的所述信息包含所述第一AP的所述定时器的所述准确性的ppm估计值或存储所述第一AP的信息的全限定域名服务器的信息 <br> 《直接公开》[0083] “The **ppm Estimate field** indicates the estimated accuracy of the TSF timer (or TOD) value for the current Broadcast TOD frame in parts-per-million (ppm).” <br> [0094] “Broadcast TOD frame 600 ... includes an optional **fully qualified domain name (FQDN) field**. The **FQDN field may point to a location server** and can be used by a receiving STA to locate the location server and establish communications with it. A receiving STA may use the FQDN information to obtain information about a broadcasting AP...”对比文件明确公开了广播TOD帧中的“ppm估计值(ppm Estimate)”字段,其作用就是指示AP定时器的准确性。同时,也公开了“全限定域名(FQDN)”字段,该字段指向一个位置服务器,STA可从该服务器获取关于广播AP的信息。因此,该技术特征的两个可选子特征均被直接公开。
**技术特征I**:其中关于所述第一AP的所述定时器的所述准确性的所述信息包含相对于所述一或多个同步AP中的其它AP的所述第一AP的所述定时器的所述准确性的邻站报告 <br> 《直接公开》[0085] “The **Neighbor Report field** may include a plurality of **Neighbor Report elements**, each for one of a plurality of **neighbor APs**... The Optional Subelements field may include a **TSF offset value and/or a ppm offset value between TSF timers of two neighbor APs**.” <br> [0091] “The Neighbor Report field ... may include **Neighbor Report element of the broadcasting AP itself**. Each Neighbor Report element may include ... the **TSF offset and/or ppm offset between a TSF timer of a neighbor AP and the AP that broadcasts the current Broadcast TOD frame**.”对比文件详细描述了广播TOD帧中的“邻站报告(Neighbor Report)”字段,该字段包含邻站AP的报告元素。这些报告元素中可以包含广播AP与邻站AP(即其他同步AP)之间的TSF偏移和/或ppm偏移信息,这些偏移信息直接反映了广播AP定时器相对于其他AP定时器的准确性(偏移量)。因此,该技术特征被直接公开。
**技术特征J**:其中所述邻站报告包含所述第一AP的所述定时器与所述一或多个同步AP中的另一AP的定时器之间的偏移量或所述偏移量的分数部分中的至少一个 <br> 《直接公开》[0102] “The TSF Offset subfield ... includes a neighbor AP's **TSF timer offset**, which is the time difference between the TSF timer of the AP that broadcasts the current TOD frame and the TSF timer of a neighbor AP.” <br> [0103] “The Data field of subelement 800 may include additional information of **Fractional TSF Offset (TSF Offset Frac)**... The **TSF Offset Frac field may include the fractional portion of the TSF offset**...”对比文件在描述邻站报告的子元素时,明确公开了“TSF偏移(TSF Offset)”字段以及“分数TSF偏移(TSF Offset Frac)”字段。前者即定时器之间的偏移量,后者即该偏移量的分数部分。因此,该技术特征被直接公开。
**技术特征K**:其中所述邻站报告包含所述第一AP的所述定时器的漂移与所述一或多个同步AP中的另一AP的定时器的漂移之间的ppm偏移量 <br> 《直接公开》[0085] “The Optional Subelements field may include a ... **ppm offset value between TSF timers of two neighbor APs**.” <br> [0103] “The **ppm Offset field** may be signed or unsigned, and may range from, for example, −328 ppm to 328 ppm, in units of 0.1 ppm.”对比文件多次提及邻站报告的可选子元素中包含“ppm偏移(ppm offset)”字段,该字段用于表示两个邻站AP(即广播AP与另一同步AP)TSF定时器之间的ppm偏移,这直接对应于定时器漂移率之间的差异。因此,该技术特征被直接公开。
**技术特征L**:其中所述ppm偏移量被包含在所述邻站报告的现有子元素或保留子元素中 <br> 《直接公开》[0100] “Each optional subelement may be defined to have a common general format... For example, subelement ID ‘1’ may be used for the **TSF subelement**. Some subelement IDs, such as 0, 7-38, and 40-44, may be **reserved for future extension** or other purposes. **Additional neighbor report information disclosed herein may be included in an existing subelement or a reserved subelement** as described below...” <br> [0104] “Subelement 820 may use **one of the reserved subelement IDs** shown in FIG. 7B. The Data field of subelement may include ... a **ppm Offset field**...”对比文件明确说明了公开的额外邻站报告信息(如ppm偏移)可以被包含在“现有子元素(existing subelement)”(例如ID为1的TSF子元素)或“保留子元素(reserved subelement)”中(如图8B所示)。这完全对应于权利要求中“包含在现有子元素或保留子元素中”的表述。因此,该技术特征被直接公开。
**技术特征M**:其中来自所述第一AP的所述一或多个广播TOD帧包含不同格式的广播TOD帧 <br> 《直接公开》[0077] “Broadcast TOD frames may take **different formats**...” <br> [0096] “In some embodiments, a broadcasting AP may be configured to **transmit Broadcast TOD frames of different formats**. For example, the broadcasting AP may transmit the Broadcast TOD frames in groups, where **one Broadcast TOD frame in each group may be a long frame** that includes optional information ... and **other frames in the group may be short frames** that do not include any optional fields.”对比文件明确描述了广播TOD帧可以采用不同格式,并具体举例说明了AP可以配置为发射不同格式的帧,例如包含所有信息的长帧和不包含可选字段的短帧。因此,“包含不同格式的广播TOD帧”这一特征被直接公开。
**技术特征N**:其中来自所述第一AP的所述一或多个广播TOD帧中的至少一个包含所述第一AP的位置配置信息LCI报告 <br> 《直接公开》[0078] “Broadcast TOD frame 400 includes ... a **location configuration information (LCI) Report field**...” <br> [0086] “The **LCI Report field may include latitude, longitude, altitude, and related information of the broadcasting AP**, as defined in IEEE 802.11REVmc.”对比文件公开了广播TOD帧中包含“LCI报告(LCI Report)”字段,该字段用于提供广播AP的经纬度、高度等位置配置信息。因此,该技术特征被直接公开。
**技术特征O**:其中来自所述第一AP的所述一或多个广播TOD帧中的至少一个包含所述第一AP的时间戳的分数部分 <br> 《直接公开》[0088]-[0089] “Broadcast TOD frame 450 includes ... a **Fractional TSF Timestamp**... The value in the **Fractional TSF Timestamp field indicates a fraction portion of the TSF timestamp**, and may be more accurate, for example, in units of picoseconds or less...”对比文件公开了广播TOD帧的一种变体(例如图4B的450),其中包含“分数TSF时间戳(Fractional TSF Timestamp)”字段,该字段用于表示TSF时间戳的分数部分。这直接对应于“包含所述第一AP的时间戳的分数部分”。因此,该技术特征被直接公开。
**技术特征P**:其进一步包括:由所述一或多个同步AP中的第二AP及第三AP向所述一或多个STA广播一或多个广播TOD帧,其中所述一或多个广播TOD帧中的每一个包含来自所述第二AP或所述第三AP的广播TOD帧的出发时间 <br> 《直接公开》[0066] “STA 310 may then **listen to Broadcast TOD frames from neighboring APs, such as AP1 320, AP2 330, and AP3 340**...” <br> [0134] “At block 968, optionally, a **second AP and a third AP of the one or more synchronized APs, such as AP2 330 and AP3 340, may transmit one or more Broadcast TOD frames to the one or more STAs**, such as STA 310. Each of the one or more Broadcast TOD frames may include **a time of departure of a Broadcast TOD frame from the second AP, such as AP2 330, or the third AP, such as AP3 340**...”对比文件不仅描述了第一AP(如AP1)广播TOD帧,还明确描述了同步AP网络中的其他AP(如第二AP AP2、第三AP AP3)也向STA广播包含各自出发时间的TOD帧。这在系统描述(图3A)和方法流程图(图9D,框968)中均有体现。因此,该附加的技术特征被直接公开。

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权利要求与技术特征
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